# Earth circumference km

**earth circumference km Eratosthenes, Over 2,000 Years Ago Has Estimated Earth’s Circumference Eratosthenes, Over 2,000 Years Ago Has Estimated Earth’s Circumference what is the circumference of earth - 28602783 Speed of Rotation = Distance/Time = 40,000 km / 24 hr = 1670 km/hr. Copyright © 2020 Multiply Media, LLC. The philosopher Plato (400 BC) declared the earth’s circumference to be 64,412 km. The Earth's radius (r) is 6371 km or 3959 miles, based on numbers from Wikipedia, which gives a circumference (c)of c = 2 * π * r = 40 030 km. The Earth's diameter is also wider at the Eratosthenes was able to calculate Earth's circumference because he knew both the distance between two cities along a great circle (800 km in today's unit of km to the south, the Sun appeared directly overhead at noon on 21 June. 017 Km. The circumference of Saturn is 235,298 miles (378,675 kilometers). 017 km. Orbital parameters Semimajor axis (10 6 km) 149. The circumference of the Earth around the poles is now measured at around 40,008 km. 000 km thus obtained is By calculating the equivalent measurement in meters we can now know that his estimate was a circumference of 25,000 miles, or 40,000 km. Thus the Earth travels about 940 million km in 1 year. The circumference of the Earth at the equator is 24,901. If Eratosthenes used the Olympic stadion of 176. 27%. 2° and got 50, which told him that the distance between Alexandria and Syene (500 miles) was 1/50 of the total distance around 7 Sep 2017 In 200 B. 28 miles (12,756. The circumference is given by 2 times pi times the radius, where pi is 3. The radius of the Earth’s orbit is around 149. Diameter (km) 4879. Aug 11, 2020 · To get the size of the earth, he multiplied 900 (distance between two points in kilometers) by 50. 6. A . Due to the irregular, ellipsoid shape of the Earth, a line of longitude wrapped around the Earth going through the north and south poles is 24,859. The circumference of the Earth at the Equator is 24,902 miles / 40,075 km. gsfc. See full list on imagine. Eratosthenes (276-194 BC) was a Greek scholar who was the first person to determine the circumference of the Earth. 96 million mi), although for general reference (and easier to remember) is simply 150 million km. 00 × 104 km. The equatorial diameter is c. If you divide circumference of the Earth into 360 degrees and then divide each degree into 60 minutes you will get 21,600 minutes of arc. feet. FREE Expert Solution We're asked to round off the circumference of Earth which is 40,008 km to four significant figures and to express it in standard exponential notation <p>Our sun is very far away from earth, 149,600,000 km on average. -The Editors The circumference of the Earth in kilometers is 40,075 km, and the circumference of the Earth in miles is 24,901. The radius of a What would be needed to accomplish this? Earth circumferences beyond Mars. 756 km and polar diameter is 12. 8 km 6,300,000 km π IN THE SKY 1. 455. Circumference to diameter. If you're familiar with trigonometry, a point on the circle of latitude at latitude L has as its radius one leg of a triangle with center at the center of the Earth, one vertex at the point, and the other vertex on the polar axis: P is the point on the The measure of the circumference of the earth made by advanced satellites is approximately 40. 017 km (24,901. However, the use of the solar day is incorrect; it must be the sidereal day, so the corresponding time unit must be a sidereal hour. The circumference of a circle is calculated using the formula: 2 x π x radius, where π is a mathematical constant, equal to about 3. pole to equator-FE) or (center of sphere to equator-RE) That would work for either one, however, the measured surface distance from the N. 2 is 1/50 of a full circle, which means that the distance between that two cities is 1/50 of the Earthâ€™s circumference. No ship in the 15th century could carry enough food and water for voyages of the real distance. The Earth Circumference which is 2. Very interesting is that the 28 Mar 2017 The method of Biruni for calculating the Earth's circumference. When we measure distances that a boat or California is about 4000 km away from me to the west, so people there are tilted about 40 degrees to the west. An oval B. <br /><br />To get the size of the earth, he multiplied 5,000 Solution(By Examveda Team) The approximate circumference of the Earth is 40,000 km. Aug 17, 2015 · Earth’s core is the very hot, very dense center of our planet. Eratosthenes was a talented mathematician and geographer as well as an astronomer. Earth's circumference is the distance around the Earth, either around the equator (40,075. He concluded that the meridian arc distance from Alexandria to Syene (5000 stadia, about 800 km) must therefore be 1/50 of the total circumference of the Earth (40,000 km). 242 Perihelion (10 6 km) 147. Originally, we were talking about 40,000 km circumference for 360 degrees (or 111. 6 km/mi = 12800 km (the correct answer is ~12742 km) So you can always figure out the dimensions from your basic knowledge of traveling! Therefore, Earth’s circumference, he knew, must be 50 times the distance between Syene and Alexandria. This motivated me further and I decided to walk the circumference of Mars (21,344 km),” he recalls. h1 = Target hidden height. The radius of Earth is about 6400 km. 139. Assuming a spherical earth and all that. The actual circumference of the Earth is 40,074 km. The north–south stadia, making the circumference of the Earth. Total Circumference of the Earth= ((360/7. The circumference of Venus is very nearly the same as the Earth's. If Earth were 40k kilometers circumference, there would be OBVIOUS round curvature at 11 miles high. Thus the circumference can be estimated by multiplying the distance 2 Mar 2009 The circumference of the Earth in kilometers is 40,075 km, and the circumference of the Earth in miles is 24,901. The Earth has a circumference of about 40,000 km while Venus has 38,000 km, making Venus' circumference about 95% the Eratosthenes made a remarkably precise measurement of the size of the earth. This is 15%. How long would it take to travel to Another milestone that he was able to achieve was that he walked more than the circumference of the moon (10,921 km). Measured around the poles, the circumference is 40,007. 4; North/south distance (arc length): 7,639 km 3,209 km (distance from Balgowan to Equator) + 4,430 km = 7,639 km; Circumference (estimate): 41,251 km 7,639 km * 5. Its value ranges from 6,378 km (3,963 mi) at the equator to 6,357 km (3,950 The first known scientific measurement and calculation of the circumference of the Earth 15 Sep 2017 Using those measurements, the equatorial circumference of Earth is about 24,901 miles (40,075 km). yields an Earth circumference of 46,000 km, just 12% too circumference. Earth to Jupiter = 628,000,000 km = 15,700 x Earth circumference. On the The circumference of the Earth around the poles is now measured at around 40,008 km. 2 = 50. The radius of the earth at the equator is about 6378 kilometers so the distance around the earth at the equator is 2 time 3. 1 km) The circumference of Earth is approximately 40,000 km. The circumference of the Earth would then be 50 times the overland distance between Alexandria and Syene. Although they knew it was a sphere, they didn't know how big the sphere was. 5 metres, the result is 39,375 km, which is 1. You can measure distances between locations and along paths. 141592 = 24,900. But, if you measure the earth through the poles the circumference is a bit shorter - 24,859. All circles share common properties that allow for formulas that relate these characteristics to one another. 609 kilometers in a mile. 82 miles (40,000 kilometers). 083 x 10 12 km 3) Radius: 3,959 miles (6,371 km) Diameter: 7,918 miles (12,742 km) Surface Area: 1. ) = 1041 miles/hour. The difference between Mars Walk and Earth Circumference ----- Diameter B. Since the Earth’s circumference is related to its radius as: Circumference = 2 × π × RADIUS (with π = “pi” = 3. However, from pole-to-pole — the 22 Oct 2020 The diameter of the Earth at the equator is 12,756 kilometers (km). The new value asked to be considered became 100,000 km circumference for 360 degrees (or 277. Earth: 7,918 miles (12,742 kilometers) diameter and 24,901 miles (40,074 kilometers) circumference. Select The Most Precise Experimental Result For The Earth's Circumference, Which Is 40075 Km. Notes:. A. Jun 23, 2010 · The equatorial circumference of the Earth is 40,075 km. Measured at the equator, the circumference of the Earth is 24,901. 461 mi at the equator and Aug 11, 2020 · To get the size of the earth, he multiplied 900 (distance between two points in kilometers) by 50. the diameter of the earth is 2 x r = 8000 mi, where the diameter is 2 times the radius. 99878 x 2 = 32,458. In this case the radius is that of the Earth which is about 6380 kilometers. Circumference ----- 2 Times Radius D. Some 150 years later, the mathematician If we accept the account of Strabo that Eratosthenes measured the circumference of the earth as 252,000 stadia, the circumference would be 24,662 miles, and Earth is approximately a sphere of radius 6. Question: How long does it take a bottle to bob across the Atlantic Ocean? Answer: It takes about a year for a bottle to travel from the West Indies to Europe. Metric: 40,075 km . Today we know our planet's circumference The philosopher Plato (400 BCE ) declared the earth's circumference to be 64,412 kilometers (40,000 miles). 55 miles (40,066. 141592) and the Earth’s volume is a function of its radius: VOLUME = (4/3) × π × RADIUS 3 We will implement Eratosthenes’ circumference measurement method and end up with an estimate of the Earth’s radius. In practice, one would want to work with trees closer together. In Today, the circumference of Earth is known to be 40 075 km at the equator, so our. Eratosthenes result is not bad at all. Here we are at 20+ miles high. If you were to cut the Earth in half at the equator, you could pick up one of the The time, distance and length of the sidereal day were used to calculate the radius of the Earth. (Astronomers call this an astronomical unit, or AU for short. circumference = 2π · 22,500 km = 141,372 km If the radius of the earth is 3960 regular (statute) miles, how many statue miles are in 1 nautical mile? What is the circumference of the earth in nautical miles? The circumferene of the earth in nautical miles seems easy. . To get the radius of the earth, he divided the earth’s circumference by 2 and pi. 859. 97 x 10²⁴ kg. Equatorial Radius = 6378. Source: Wikipedia Instead of the Sun we use a GPS receiver to measure the angle φ (difference of the latitudes) belonging the length of the meridian arc s (20 m) from P1 to P2: Eratosthenes measured Earth’s circumference mathematically using two surface points to make the calculation. Measured around the Earth radius is the distance from the center of Earth to a point on its surface. Earth's Circumference = distance in kilometers from the equator * (360/angle difference) 4. The speed of light is 3. Similarly, the Earth's equatorial circumference is 24,902 miles. , a mathematician living in Egypt named Eratosthenes used a clever method involving observation of the sun in two nearby locations to determine the actual circumference of the earth. Activity: Lesson 4. That would give us a circumference at the equator of 62,838 km. At the same time in Alexandria 500 miles north (on the same meridian), the rays of the sun shone The circumference of the earth at the equator is 24,901. How long would it take to travel to Oct 24, 2020 · By the fifth century BC, the Greeks had firmly established that the earth was a sphere. 55 miles. Nautical Mile. It spins around once every 24 hours, so if you are standing on the Equator you are actually moving at about 1,037 mph / 1,669 kph. 862916921828 km. Here’s an article about the Earth’s magnetic field, and here’s an article about the surface area of Earth. Dec 10, 2016 · In the mid-20th century we began launching satellites into space that would help us determine the exact circumference of the Earth: 40,030 km. The latest measurements show that the correct distance from Alexandria to Assouan is 500 miles and if Eratosthenes had known this, the result of his calculation of the Earth’s circumference would have been: 50 x 500 = 25000 Apr 26, 2013 · The circumference is 40,074 km. So he multiplied 500 by 50 to arrive at his estimate of the Earth’s circumference: 25,000 miles. 9 million sq km), and the oceans c. 017 km [ 24,901. Since we are about 16 Jul 2013 The Earth's circumference at the equator is 40,075 km. The average Earth-Moon distance is about 385,000 km, which is about 9. 2°. Sep 22, 2019 · A well at Kom Ombo, 50 km north of Syene — from isawnyu. circumference of 40 030 km. Some 150 years later, the mathematician Archimedes estimated it to be 48,309 km. The person's tilt is in the same direction as the person. Think about that in relation to the "unipolar" flat earth map, of course we don't know what the accepted map is today! The circumference of the earth is approximately 40 075 km . The concept he used was very simple. 003353 Mean density (kg/m 3) 5514 Surface gravity (m/s 2) 9. This compares with the true value of 40,008 kms for the circumference around the poles. Eratosthenes' method Jan 14, 2020 · The distance between the two cities was about 5,000 stadia (500 mi), and Eratosthenes concluded that if one-fiftieth of the circumference was 5,000 stadia, then the full circle was 250,000 stadia (25,000 mi) or 40,000 km. Then using the following formula the circumference of the Earth can be calculated. 0% 40,000 km / 41,251 km Circumference of earth in km. gov Aug 31, 2017 · He then only needed to find the distance (arc length) between Alexandria and Syene to determine the circumference of the entire circle (Earth). The average radius of the Earth is 3,959 miles (6,374 kilometers). The sun’s diameter is 1. pole to the equator is 10,001 km. The modern measurement is 40,070 kilometers. 2 degrees. Jul 19, 2000 · Equatorial diameter: 12 756. 017 km round the equator is actually the measurement of a kind of ‘ideal’ Earth, with the surface detail smoothed over and averaged out. How slight a bulge? Well, you calculated that the percent deviation between the polar and equatorial circumferences was only _____ % 6c. 009°. Punjab-born Irish Man Walks over 40,000 Km in His Own City to Eye 'Earth Walk' Record Oct 17, 2020 · A 70-year-old man from Ireland has staked a claim for a Guinness World Record for walking the earth - a distance equal to the Earth’s circumference — 40,070 km — in less than four years. May 08, 2011 · It's all about proportion. • The distance to the moon is 10 times the circumference of Earth, or approximately 400,000 kilometers (250,000 miles). The radius of the Earth is 6,371 km. 000 Core radius (km) 3485 Ellipticity (Flattening) 0. Its mass is 5. Metric Imperial. space if Earth rotates? (Your final answer may be in either miles/sec or km/sec. Earth geometry is a special case of spherical geometry. and the circumference is 40,076 km as compared to the polar circumference of 40,008 km. circular path circumference = 2π · radius. He noticed that on a certain day the sun shone directly down a deep well in Syene (modern Aswan). The earth is 25,000 miles [40,000 km] in circumference and rotates once every 24 hours. The radius of earth is about 6400 kilometers. In this lab, you will use some modern technology to collect data that you will use to determine the size of the earth without leaving the campus! But Eratosthenes measured a circumference of 250,000 stades, and thus must have measured L = 5000 stades. The circumference of Earth at the equator is about 24,902 miles (40,075 km), but from pole-to-pole — the meridional circumference — Earth is only 24,860 miles (40,008 km Jul 03, 2016 · In the mid-20th century, we began launching satellites into space that would help us determine the exact circumference of the Earth: 40,030 km. The distance was found to be 800 km (No, the unit was not kilometers back then… It was stadia!). The spot on the Earth's equator travels this full circumference every sidereal day. Are the basketball Earth and tennis ball moon farther apart than you expected? Take a picture and show your friends and family how far apart the moon and Earth really are What are the diameter and circumference of Uranus? Uranus is a large planet, about 4 times that of Earth: Uranus: 31,763 miles (51,118 kilometers) diameter and 99,786 miles (160,590 kilometers) circumference. ) The circle is the circumference of the Earth. The circumference of this circle can easily be calculated by using the basic equation learned in high school: C eq = 2πR eq. 5 times the circumference. Aug 21, 2018 · Distance between Alexandria and Syrene = D kilometers. Modern science tells us that the circumference of the earth about the equator is 24,902. 525666 x ½ = 5,165. The difference between this and the earth’s circumference is around 19,000. The distance from Earth to the sun — called an astronomical unit — is 92,955,807 miles (149,597,870 kilometers), according to the The Earth's radius (r) is 6371 km or 3959 miles, based on numbers from Wikipedia, which gives a circumference (c)of c = 2 * π * r = 40 030 km. 8 Mean values at opposition from Earth Distance from Earth (equator, km) 378,000 Apparent diameter (seconds of arc) 1896 Apparent visual magnitude -12. Calculate. More precisely the circumference of the earth at the equator is 24,902 mi / 40,076 km. Which latitude circle has a circumference of about 3593 kilometers? d. 9 km for [+] 4 days ago The calculation of the circumference of the earth is one of the most popular computing tasks for children. A perfect circle The Earth's radius (r) is 6371 km or 3959 miles, based on numbers from Wikipedia, which gives a circumference (c)of c = 2 * π * r = 40 030 km. 14159. Apparently, he arrived at the radius to be 6,617 km. The tennis ball is the moon. 1 km. 14, or a bit more precisely, 3. Circumference of Earth is ~40000 kms but Dr Manmohan Singh gave away 43000 kms of Indian territory to China BJP is full of idiots, from Party 26 Mar 2020 Because of this, the diameter of the Earth at the equator is about 43 kilometers ( 27 mi) larger than the pole-to-pole diameter. Get better grades with tutoring from top-rated private tutors. 1 nautical mile is defined Some sources state that Earth's equatorial speed is slightly less, or 1,669. Place the tennis ball there. 8 km/h. It takes the Earth 23 hours, 56 minutes, and 04. 525666 km. The earth, as we said, is an oblate Eratosthenes divided 360° by 7. The surface of the earth is divided into dry land and oceans, the dry land occupying c. 712 km. But over 2000 years earlier, a man named Eratosthenes in Ancient Greece came up with nearly the exact same figure using just a stick and his brain. The correct value of the Earth Units. Eratosthenes. Eratosthenes' estimate is only about 15% too large! The distance between the parallel of Lafrançaise and the parallel of Meerut is km, which gives 40030 km for the Earth's circumference. Making Your Estimate of the Circumference of the Earth. An extremely 16 Jan 2019 Circumference. (b). Sep 29, 2020 · Then it wasn’t long before the 70-year-old completed 21,344 km, the circumference of Mars, and started to aiming for the circumference of the Earth which is 40,070 km. 901. He simply paid a guy to measure that distance between the two cities for him. This is because the Earth isn’t a perfect sphere. 2 mi. 39 690 km, a smaller error of 26 Dec 2018 Diameters Total Relationship With The Moon Orbit" If Earth diameter = 12756 km, is considered to be = 1 i. A spot on the Earth's equator traces out a full circle every sidereal day. 29 Min. The philosopher Plato (400 BCE) declared the earth's circumference to be 64,412 kilometers (40,000 miles). 4 Mean density (kg/m 3) 5420 Escape velocity (m/s) 4300 Average distance from Sun 0. Earth radius at sea level is 6378. 63 hours orbital velocity of SMAP ~ 27,057 kph C A S S I N I H Y D R A Z E T N K V I S U A L O D O M E T R Y : 1 4 3 C M 9% slippage 5. Using this information we can calculate the circumference of the Earth as C = π x 12,742km = 40,030km. You can also measure the size of polygons that you draw in Google Earth. He got the circumference as 45,000 kilometers. Mar 07, 2018 · The circumference of a circle is equal to the radius, times 2, times the mathematical value for pi (π). During Module 2 you found circumference of the Earth at the Equator is just over 40,000 km. Problem: The circumference of Earth through the poles is 40,008 km. 5 km), and that the circumference about the poles is 24,860. Practice: Quiz: Our Solar System and Earth. The earth has a circumference of approximately 24,900 miles. The circumference of a circle (or sphere) is its diameter x ∏ , so. 1 million km ². 097 2 km The circumference of a circle is: 2* pi*R . This module combines the material from KM#4 and KM#9 . Born around 276 B. 57. Apr 28, 2018 · The Earth's mean distance from the sun is approximately #150# million kilometers. pi is the value of pi and is imported from the math library from line 1. Therefore, the Earth's meridional or polar circumference calculated in the GRS80 ellipsoid is If global communication occurs via satellites in a low Earth orbit (1500 km altitude ), the furthest distance is approximately 24,750 km. The earth is not a perfect sphere but is slightly oblate, or flattened at the poles. Jun 14, 2020 · 40 000 , give or take, as it depends how you measure that. 01 (with surprisingly high accuracy) Also, numbers are even closer if we compare circumference of the sun 4,370,006 km with value resulting from using mean radius of the Earth: 6,371. To the nearest thousand square kilometers, how much of Earth's surface is land hired to walk, that Eratosthenes was able to calculate Earth's north to south circumference to within 750 km of the circumference found by modern methods. radius of Earth ~ 6,371 km orbital altitude ~ 685 km circumference of orbit ~ 44,344 km c ir umf er nce of Earth = 4 0,3 0km orbital period of SMAP ~ 1. ) The average distance from the Earth to the Sun is about 149,600,000 km. Calculator for the equatorial circumferences of Sun, Moon, Earth and the planets in kilometers, miles and compared to each other. The circumference of the Earth in kilometers is 40,075 km, and the circumference of the Earth in miles is 24,901. 4 'earth slices' 360º / 66. 73 mi ]). The circumference of a circle is given by the formula #2pi r# where #r# is the radius. 6 km in a mile, so in miles the circumference is about 25,000. 186 GM (x 10 6 km 3 /s 2) 0. 86 km [ 24,859. miles. This means a radius of 6,377 km (N. Where R is the radius of the circle. Which is all a long-winded way of saying multiply the circumference of the earth by the cosine of the latitude. Using those measurements, the equatorial circumference of Earth is about 24,901 miles (40,075 km). If you measure the circumference around the Earth’s equator, you get the 40,075 km figure I mentioned up to. 09 Aphelion (10 6 km) 152. 191 mi) at the equator. But over 2000 See full list on worldatlas. 6 Jun 2017 A nautical mile is based on the circumference of planet Earth. A) 40100 ± 100 Km B) 40080 ± 25 Km C) 40000 ± 100 Km D) 40090 ± 50 Km E) 40000 ± 20 Km 2. 9724 Volume (10 10 km 3) 108. 90 miles), (99. Taking the Earth as spherical, the Earth's circumference would be fifty times the distance between Alexandria and Syene, that is 250,000 stadia. (a) What are its circumference in km? (a) What is its surface The average Earth-Moon distance is about 385,000 km, which is about 9. 1 mi = 1. The circumference of Earth around the equator is about 24,874 miles (40,030 km), but from pole-to-pole, the Earth is just 24,860 miles (40,008 km) Here's a graphic I made showing the diameter of the earth to illustrat Convert Earth Circumference to Kilometers (Ec in km). ) Note: There are 1. assume the diameter of the earth to be 8000 miles. We don't know the exact length the Greeks used for their unit of length, the stadium, but historians have argued for either 157. And the length of time the Earth takes to complete one full turn on its axis is 23. found the first estimate for the circumference of the Earth. This motivated me further and I decided to walk the circumference of Mars (21,344 km)," he recalls. Earth's Circumference at the Equator: 24,901. 73 mi / 40. Therefore, the Earth radius isn't constant, but it can be calculated for every location. Since 1 Egyptian stadium is equal to 157. 3 to total the circumference of the Earth. The island is 3. May 04, 2015 · Not only that, the internal mass of the Earth can shift around as well (have a look at this short Scientific American piece for a quick overview of how un-round the planet can be!). 008 kilometers. It's a mile round the circumference of the field. radius = distance from the earth's center = 22,500 km. If you measure the circumference of the Earth, while passing through the poles, the Bulk parameters Mass (10 24 kg) 5. Math. Using data from the biblical books of Ezekiel and Revelation, we can easily arrive at a number between these two figures. Jun 23, 2018 · So, Earth's orbit is the circumference of a circle. 0 x 108 6 Sep 2011 The distance around the Earth at the Equator, its circumference, is 40,075 kilometers (24,901 miles). 55 miles (40,075. Find this Pin and more on 10 Jan 2016 When we calculate that the Earth's circumference (24,881 miles) divided up into degrees (360 degrees in a circle), we find that 1 degree would . Oct 17, 2020 · The man has applied for a Guinness World Record after completing what he calls his Earth Walk covering over 40,075 kilometres or the equivalent of the circumference of the Earth in under 1,500 days. Find the circumference How Much Of The Amazon Rainforest Is Left? Countries Where Illegal Wildlife Trade Is A Major Threat To Wildlife. 73 x 10 11 cubic miles (1. The unit of measurement that was popular in Greece at the time was stadia. 14. 4% less than the real number, 40,076 km. e. You can use Eratosthenes' method to calculate the circumference of the earth yourself. If you go from pole to pole through the center, the distance is only 12,713 km. 3 DQ notebook. You have probably noticed that, since diameter is twice the radius, the proportion between the circumference and the diameter is equal to π: C/D = 2πR / 2R = π. Thus, points at or near the equator move at about 1,000 miles [1,600 km] an hour. When it comes to measurements from pole-to-pole, or along the meridian line, the Earth has a circumference of 24. The surface distance between the local observing location and the equator in kilometers will need to be determined as well (1 degree equals 110. com Earth's circumference is about 40,000 km, and its shape is A. Earth radius is the distance from Earth's center to its surface, about 6,371 km (3,959 mi). The Earth is very close to a sphere (ball) shape, with an average radius of `6371\ "km"`. </p> <p>About 200 years BC in ancient Greece, scientists in those days were convinced that the spherical shape of the Earth, and Oct 17, 2020 · By Aditi Khanna London, Oct 17 (PTI) A 70-year-old man, born in Punjab and based in Ireland for over 40 years, has applied for a Guinness World Record after completing what he calls his Earth Walk – covering over 40,075 kilometres or the equivalent of the circumference of the Earth in under 1,500 days – without stepping out of his home city of Limerick. So the distance of 40,075. 1 km Equatorial Circumference = 40,075 km Polar Radius = 6356. How can I calculate the circumference of a line around the earth (a circle) at 40 degrees north latitude? 13 Mar 2011 The Earth's circumference is 24,900 miles. Circumference ----- Radius ***C. An interesting topic in 3-dimensional geometry is Earth geometry. Eratosthenes' estimate is only about 15% too large! Jan 16, 2013 · Today, official value of the Earth’s circumference along the line of longitude is 40,007. 017 km equatorial (24 901. 4 Dec 2014 Both the lines combined cover 1,14,084 train km, which is nearly thrice the circumference of the entire earth which stands at 40,075 km. With a circumference of 40,075 km, Earth is the fifth largest of the planets in the Solar System. Thus if one measures the distance from Alexandria to Syene and multiply it by this amount, then what got has to be the circumference of the Earth! where the real value is 40075 km. As there is 1. 74 * These represent mean apogee and perigee for the lunar orbit, and were used for calculating the maximum and minimum velocities. 972 x 10 24 kg The orbital speed of Earth averages about 29. 65 Revolution period (length of year in Earth days) 87. Earth’s equatorial diameter is 7,926 miles (12,756 kilometers), but from pole to pole, the diameter is 7,900 miles (12,720 km) — a difference of only 40 miles (64 km). 60 million km (92. Eratosthenes, some 2,200 years ago, was off by only 125 km or 101 mi. Write an equation for the circumference of any latitude circle with angle x c. d0 = Target distance. 93 hours. (Remember, the circumference of a circle is equal to 2×π×radius. However, the Earth is not quite a perfect circle, and if Answer to: The earth is approximately sphere of radius 6. English: 24,901 miles . To make a quick scale model of this system, you will need a Part A: use an angle of 30º, 40º, or 45º; Part B: for cm to km conversion, use scale in book!!! Part B: your “part of Earth” is second measurement in Data Table B. The "accepted" distance from the equator to the north pole is close to 10,000 km (10,002 km if you are fussy) and the "accepted" circumference around the equator is close to 40,000 km (40,075 km if you are fussy). 9º (central angle btwn. 10 Mean orbital velocity (km/s) 29. Vinod Bajaj began his journey in August 2016 with a humble goal of losing some Apr 29, 2013 · What would the measured angle in Discovery 0-1 have been if Earth's circumference were 100000 km instead of 40000 km? Express your answer using two significant figures. Today we know our planet's circumference is roughly 40,000 kilometers (24,850 miles). 4 Solved: The circumference of Earth at the equator is approximately 40075 km. He noted that the Sun’s rays fell vertically at noon in Syene (now Aswān), Egypt, at the summer solstice. Through the. 137 Polar radius (km) 6356. In Alexandria, also in Egypt, at the same date and time, sunlight fell at an angle of about 7. 6 May 2012 The equatorial diameter Earth is about 7926 miles (12,756 km) while the polar diameter is 7900 miles (12,714 km). 8 km Polar Circumference = 39940 Length of the rope (at ground level) is equal to the Earth’s The mass of the sun is 1. Then it wasn’t long before the 70-year-old completed 21,344 km, the circumference of Mars, and started to aiming for the circumference of the Earth which is 40,070 km. Earth's circumference (the distance all the way around the equator) is 24,901 miles (40,075 kilometers). From these observations, he made two deductions: A. 5 Earth-sized spheres across Saturn’s Equator. C eq = 40,031. In other words, if you could drive your car around the equator of the Earth (yes, even over the oceans), you’d put on an extra 40,075 km on the odometer. 903 mi) at the poles and 6371. 24,830 mi (40,000 km). Eratosthenes estimated Earth’s circumference at about 46,250 kilometers (28,735 miles). The north polar radius is 45 m longer than the south polar radius. This proportion (circumference to diameter) is the definition of the constant pi. The earth's circumference is more than 40000 kilometres. Thus, the furthest distance along the surface of the Earth, from any given point, is approximately 20,000 km. 137 km (3963. 99878 km. “The difference between the Mars Walk and Earth Walk was approximately 19,000 km and I knew <p>If you go from pole to pole through the center, the distance is only 12,713 km. the linear distance around the earth. 6 km). 461 mi) The equator, around the middle of Earth's surface, is about 40,075 kilometers or 24,900 miles long. 141592 = equitorial circumference _____7,926 x 3. Physics. We will use this value. The circumference of Earth varies depending on the method used to measure it. Very interesting is that the measurement of the distance between Alexandria and Syene is based on the estimated average speed of a caravan of camels that traveled this distance(!). He knew that at the summer solstice the sun shone directly into a well at Syene at noon. Earth's circumference is the distance around the Earth. 6093 to get it in miles (statute) = 24902. For this calculation, the longitude isn't needed. Given this information, what is the circumference of the Earth? Get out a piece of paper and a calculator and see if you can work it out on your own. 192 kms. h0 = Eye height. The meridional circumference that is from pole to pole is 40,008 km. The ISS is traveling around the Earth at the rate v, of 27,767 km/hr in order to remain in orbit. Earth's polar radius is 3,950 miles (6,356 km) — a difference of 13 miles (22 km). 461 mi). 75 km, (3949. 276-195 B. 461 mi / 40. 1)Find the circumference of the earth of the earth in meters and write your answer in scientific notation ? Follow • 2 11. pi). 14156) is the ratio of a circle's circumference to its diameter Answer to: Earth is approximately a sphere of radius 6. 02 km is the equatorial circumference of Earth. Modern scholars disagree about the length of the stadium used by Eratosthenes. Question: 1. 14 · (6. 2) x D ) kilometers. The ball-shaped core lies beneath the cool, brittle crust and the mostly-solid mantle. He calculated the height of the mountain by going to two points at sea level with a known distance apart and then Jul 10, 2007 · You are right circumference of the earth is correct and that is what is used nowadays. Reported measurements are , [1]. The Earth is Spherical circumference of the Sun = circumference of the Earth x circumference of the Moon x 0. So on the same day, different year, he noticed that in Alexandria, some 800 kilometers (km) away, a vertical pole cast a shadow. 66 % of the 1° of Longitude (1/360th of the Earth's equatorial circumference) is 20 Oct 2020 925 km) and that the Earth is perfectly spherical. Manasquan & Balgowan) = 5. It is 6356. 872399. 2° from the vertical. Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. 3 ± 118 km, which is within 13 Mar 2018 The distance between Syene and Alexandria is 787 kilometers. 505 km Equatorial circumference: 40 075. The three primary characteristics of a circle are its circumference, diameter and radius. The Greek mathematician Eratosthenes(ca. 4 mi. Measurement of Earth's circumference has been important to navigation since ancient times. 256 Tropical orbit period (days) 365. 86 km. So, at any reasonable scale, a perfect _____ is the best representation of the earth’s shape. 09053 seconds to complete a full rotation on its axis. radius_of_earth = circumference_of_earth_in_km / (2 * math. The flattened spherical nature of Earth is reflected in terms of its equatorial and meridional circumference. The equatorial circumference 17 Jun 2002 This project invites you to measure the circumference of the Earth, in a corresponds to 185 meters, so the value of 74. approximately 40,060km. What are (a) its circumference in kilometers, C = 2πR = 2 · 3. It was originally defined as the ratio of a circle's circumference to its diameter (see second formula below on why) and appears in many formulas in mathematics, physics, and everyday life. 5 degrees north. Principles of Geology. At the equator, Earth has a circumference of 24. Then the number of sectors to make a complete circle would be 360/7. The earth, as we said, is an oblate spheroid, so geodesists (scientists who measure the earth and its position in space) have measured and calculated the average of earth's circumference as 40,075 km or 24,901 mi. Standing on the Arctic Circle, the distance around the Earth is reduced to about 10,975 miles / 17,662 km. -- The problem with socialism is there's always Apr 16, 2020 · Because Earth is not completely spherical, its mean radius is 3,959 miles, and its equatorial diameter is 7,926 miles. Its total surface area is 510. Vinod Bajaj who was born in Punjab and based in Ireland for over 40 years claims he has covered over 40,075 kilometres in under 1,500 days – without However, it is VERY IMPORTANT to remember that the earth’s bulge is very slight. “The difference between the Mars Walk and Earth Walk was approximately 19,000 km and I knew it The result of the spinning is that the circumference at the equator is longer than the circumference of Earth if you went from pole to pole. Oct 20, 2020 · Thus Posidonius's measure of 240,000 stadia translates to 24,000 mi (39,000 km), not much short of the actual circumference of 24,901 mi (40,074 km). 38 106 m, determine the speed and . Earth's diameter is ~12,752km. How Big Is Planet Earth – What Is The Size Of Planet Earth. Putting Eratosthenes result into modern units, his estimate of the circumference of the Earth is as follows: Circumference = 50 x 5000 stadia = 250,000 stadia 250,000 stadia x 185 meters/stadion = 46,250 kilometers. 2° and got 50, which told him that the distance between Alexandria and Syene (500 miles) was 1/50 of the total distance around the Earth. A perfect sphere D. By wrapping a string around the basketball ten times (or wrapping it around the ball once and using that Oct 11, 2020 · This motivated me further and I decided to walk the circumference of Mars (21,344km). If global communication occurs via satellites in a low Earth orbit (1500 km altitude), the furthest distance is approximately 24,750 km. The polar circumference is slightly shorter at 40,008 km (24,860 miles). Biruni's estimate of 6,339. 37 × 103 km) = 4. The equatorial circumference of the Earth is approximately 40,076 km (24,902 miles). The highest recorded temperature on Earth is 134 degrees Fahrenheit. Equatorial Diameter = 12,756 km km Around 200 B. Now, 7. Apr 19, 2016 · Assuming the earth is a sphere with a radius of 6. 59 kilometers). 6 700 km) C ISS = 42,. 5"10-11, which corresponds to 1 mm in the circumference of the Earth. As a result, the latest 7 Aug 2019 Caliph Al-Ma'mun determined the equatorial Earth's circumference being 20400 miles. )/(23 + 56/60 hrs. metas. 780 Escape velocity (km/s) 11. 37 \times 10^6 m. To make a quick scale model of this system, you will need a globe and a ball about a quarter of it's diameter to represent the Moon. Think about that in relation to the "unipolar" flat earth map, of course we don't know what the accepted map is today! proportional to the radius, the circumference of the earth at 60 degrees North latitude is approximately 12,000 miles. Its equatorial diameter is 12. Part 1: Estimating the Circumference of the Earth Determining the earth's size. New Delhi: An Indian origin man from Ireland has claimed that he walked a distance equal to the Earth’s circumference — 40,070 km — in less than four years, without leaving his immediate neighbourhood in the city of Limerick. Compendium on the Science of Stars, 10 Dec 2016 Today, we know that the equatorial circumference of Earth is 40,075. So . Earth also rotates faster at the equator. (2,900 km) below the Earth's surface. Now, to get this in Nautical miles multiply it by the conversion from above (5280/6000) = 21913. The Earth is 40,066 kilometers in circumference. So in the case of the Earth's orbit, it is roughly: #2pi * 150 \ "million km" ~~ 940 \ "million km"# Jan 30, 2020 · Earth's circumference at the equator is 40,075 km and 40,008 km at the poles. The Earth is about 7,926 miles (12,756 km) in diameter. A meter (the SI unit for the length) was once defined as 1/10 000 000 of the distance from Equator to the pole . Mathematically, Earth is a spheroid. 863 km (24,859. Question: What is the circumference of Earth at the equator (in kilometers)? Answer: The equator’s circumference, or length around, is about 25,000 miles (40,000 kilometers). Total angle of a circle= 360 degrees. Very simple. Although they knew it was a sphere, they did not know how big the sphere was. 16# #km# Explanation The "accepted" distance from the equator to the north pole is close to 10,000 km (10,002 km if you are fussy) and the "accepted" circumference around the equator is close to 40,000 km (40,075 km if you are fussy). 1 Earth Circumference to common length units; 1 Ec = 40000000 meters (m) 1 Ec = 40000 kilometers (km) 1 Ec = 4000000000 centimeters (cm) 1 Ec = 131233595. The speed of revolution around the Sun is even larger: Speed of the Earth's Revolution around the Sun: Radius of the Earth's Orbit = 1 AU = 150,000,000 kilometers Circumference of the Earth's Orbit = 2*pi*R = 942,000,000 kilometers Time to complete one Orbit = 365. (The poles, of course, just spin on the spot. 97 Obliquity (tilt of axis degrees) 0 Orbit inclination (degrees) 7 Eratosthenes then used this to calculate the circumference of the Earth to be about 250,000 stadia. The Earth is an oblate spheroid therefore the Pole to Pole circumference is slightly less. Its diameter (the distance from one side to the other through Earth's center) is 7,926 miles (about 12,756 kilometers). 37×106 m. in Cyrene, Libya, Eratosthenes soon became one of the most famous mathematicians of his time. 14 times 6378 which equals 40,074 kilometers. It is used in many areas, such as physics and mathematics. pi) So we have another variable the radius of the earth which is being assigned whatever the result of circumference of the earth divided by (2 * math. 4 million kilometers while its circumference is around 4. 4 million kilometers. He made several other important contributions to science. 255 statute miles. The Earth is the fifth-largest planet in our Solar System (after Jupiter, Saturn, Uranus, and Neptune). Measured around the equator, it is 40,075. What are (a) its circumference, (b) its surface area, and (c) its Earth's circumference is the distance around the Earth. 37 * 106 m. High water pressure in this area makes exploring it very difficult. That will make 109 earths side by side to match sun’s diameter. By the second year, he had completed about 15,600 km — more than the circumference of the Moon, which is about 10,917 km. A nautical mile is based on the circumference of the planet Earth. 82 miles (40,008 km). The math. 116+3 sentence examples: 1. The la Jan 13, 2020 · Recession rate from Earth (cm/yr) 3. 274 km Polar diameter: 12 713. 734 mi). Dec 31, 2015 · What is the circumference of the earth in km? Astronomy Our Solar System The Earth. (40,008. 26 Jan 2001 of the earth at the equator in miles. As earth is not a perfect sphere, circumference measured around the poles is 39,940. “The difference between the Mars Walk and Earth Walk was approximately 19,000 km and I knew It says the circumference at the equator is 40,075 km (24,902 miles), whereas the circumference through the poles is 40,008 km (24,860 miles) So rounding off to 40,000 km for the circumference through the equator, and 10,000km for the distance from the equator to the North Pole is totally acceptable. What are (a) its circumference in kilometers, (b) its surface area in square kilometers, and (c) its volume in cubic kilometers? The circumference of the Earth is 40,075 km (radius of 6,378 km). 752 km (3949. Now imagine if we were to slice through the earth at 23. Aug 27, 2009 · Circumference of the earth. Considering the simplicity and rudimentary but ingenious technique used by Eratosthenes, its calculus approximation was amazing. Eratosthenes estimated Earth's circumference at about 46,250 kilometers (28,735 miles). In the second part you will determine the mass and density of the Earth. You can find details on Lafrançaise (France) at [2] and on Meerut (India) at [3]. By contrast, the diameter measured from the North Pole to the South Pole is 68,000 miles (109,000 kilometers). ch into perspective, the circumference of the earth is about 40,000 km. The actual polar circumference of Earth is just a bit over 40 thousand km (about 24,860 miles). In other words, if you could drive your car around the equator of the Earth (yes Apr 25, 2017 · Earth’s Measurements. Sep 13, 2019 · 3-D Earth Geometry . 2422 days Jan 01, 2014 · Today I found out about a man who fairly accurately estimated the circumference of the Earth well over 2,000 years ago: Eratosthenes of Cyrene. Using those measurements, the equatorial circumference of Earth is about 24,901 miles (40,075 km) Mars' distance from earth varies a lot, it all depends on where the two planets are relative to each other in their different orbits around the sun Equatorial radius of the WGS84 Activity: Claim Testing – Geology and the Earth’s Formation. Nov 20, 2017 · Determining the earth s size the earth has a radius of 6300 km earth similarity index esi for 47 a 1700 km radius archean dwarf earth calculate the distance to horizon What Is The Radius Of Earth QuoraHow Much Is The Average Radius Of Earth QuoraWhat Is The Radius Of Earth QuoraHow Big Is Earth… So the distance traveled in one year is just the circumference of the circle. In other words, if you could 10 Sep 2016 In the mid-20th century we began launching satellites into space that would help us determine the exact circumference of the Earth: 40030 km. In the first part you will estimated the circumference, radius and volume of the Earth. 78 km per degree across the earth's surface). 6063 inches (in) The circumference of the Earth would then be 50 times the overland distance between Alexandria and Syene. 21 Jun 2006 Values between 500 and about 600 feet have been suggested, putting Eratosthenes' calculated circumference between about 24,000 miles and And calculated in the GRS80 ellipsoid 40,007. Depends where you measure it. 387 AU (57,909,175 km) Rotation period (length of day in Earth days) 58. Because seven degrees is about one 50th of a full circle (360 degrees), Eratosthenes simply multiplied the distance from Alexandria to Syene -- believed to have been about 515 miles (830 km) -- by 50. 653 Km, and circumference measured around the equator is 40,075. Then the equatorial speed is (24,900 mi. 075. Earth is approximately a sphere of radius 6. math 15 find the minimum height above the surface of the earth so that the pilot at point a can see an object on the horizon at c 125 miles away. However, the Earth is not quite a perfect circle, and if you measure through the poles, the circumference is a bit shorter—24,859. The equatorial diameter is approximately 75,000 miles (120,000 km). How do you calculate the exact The circumference of the earth is approximately 25,000 miles with a mean radius 3,959 miles. The other terrestrial planets, which are Venus, Mercury and Mars, are smaller than the Earth. 78 km/s (107,200 km/h; 66,600 mph), which is fast enough to travel a distance equal to Earth's diameter, about 12,742 km (7,918 mi), in seven minutes, and the distance to the Moon, 384,000 km (239,000 mi), in about 3. Celestial bodies are not spheres, but are oblate at their poles. This the earth is a tad wider than it is tall, giving it a slight bulge at the equator. 16# #km# Explanation: The earth has a Jan 17, 2007 · 40,075. Only erred in 6. The diameter and the circumference of a circle correlate. 2. Use the measuring tape to find a spot 23 feet 9 inches away from the middle of the basketball. 7,926 mi (12,760 km) and the polar diameter 7,900 mi (12,720 km); the circumference at the equator is c. Earth to Saturn 3 Apr 2019 Video: Eratosthenes Measures the Circumference of the Earth which would have made the Earth's circumference 44100 kilometers, about 10 the Earth circumference north of Syrene, and the Earth circumference must be 50 × 833 km, or 41, 666 km (see diagram at left). For example, the famous number pi (approximately 3. This is the distance around the equator of the Earth. 5 hours. C. Variation in Eratosthenes' estimates based on stade length Regardless, he calculated the size of the earth to within an order of magnitude and possibly got very close. 7 m (41,675 km). Why don't libraries smell like bookstores? The earth is not a true sphere but an oblate spheroid. But over 2,000 years earlier in ancient Greece, a From this he calculated the circumference which he determined to be 250,000 stadia (39,375 kms to 46,250 kms depending on the ratio used to convert stadia to kms). Angle subtended by them on the center of the Earth= 7. English: Biruni (973 - 1048) developed a new method using trigonometric calculations to compute earth's radius and circumference based on the angle between the horizontal line and true horizon from a mountain top with known height. 798 Surface acceleration (m/s 2) 9. 78 Max. 02 km Polar circumference: 40 007. About 1 degree tilt per 100 km distance. 97 x10 8 square miles (5. The radius was measured as 6394. 804 km x 50 = 40,200 km; And for any of you ancient Greeks out there, 5,000 stadia x 50 = 250,000 stadia. the earth is curved; B. Round this number to four significant figures, and express it in standard exponential notation. 16 kilometers). Earth's Size Volume: 6. This is known as the meridional circumference. 14 x 6380 = 40,000 Kilometers. Summary: Earth's circumference is 40 Mm (40,000 km). Multiply 6385. 4 'earth slices' = 41,251 km; Percentage Error: 3. Sep 07, 2017 · In 200 B. c = 2 * π * r = 40 030 km, We wish to find the height (h) which is the drop in curvature over the distance (d), Using the circumference we find that 1 kilometer has the angle360° / 40 030 km = 0. Jan 16, 2019 · Circumference . Number of 'earth slices': 5. 11 km per degree across the Earth's surface). 5 km in circumference. facebook. The Earth's orbit is roughly circular. ) Oct 17, 2020 · A 70-year-old man, born in Punjab and based in Ireland for over 40 years, has applied for a Guinness World Record after completing what he calls his Earth Walk covering over 40,075 kilometres or the equivalent of the circumference of the Earth in under 1,500 days without stepping out of his home city of Limerick. Measurements may not be 100% accurate, especially in areas with 3D terrain and buildings. After writing about some of the most exciting current and future experiments around the world, I decided to look all the way back to The circumference of the earth at the equator is 24,901. 37 times 10^6 meter. A man named . 756 mi) on average. 0 km (mean circumference: 40,030 km): Date: 01/26/2001 at 20:37:52 From: Doctor Fenton Subject: Re: Circumference - at latitude of globe Hi Lynn, Thanks for writing to Dr. 39860 Bond albedo 0. Eratosthenes divided 360° by 7. [insert Putting Eratosthenes result into modern units, his estimate of the circumference of the Earth is as follows: Circumference = 50 x 5000 stadia = 250,000 stadia 250,000 stadia x 185 meters/stadion = 46,250 kilometers. 2336. If 1 degree is 60 miles, then 360 degrees would be 360*60 = 21600 miles right? How did Eratosthenes manage to determine the circumference of the Earth without going anywhere? Connect with us at: https://www. At 110 km apart, the arc distance between them would subtend a 1° angle at Earth’s center. 007. The velocity is the distance 15 Feb 2018 How Aryabhata got the earth's circumference right (24,835 miles), just off the currently accepted value of 40,074km by an incredible 0. This is obtained by dividing Earth's equatorial circumference by 24 hours . Oct 17, 2020 · This motivated me further and I decided to walk the circumference of Mars (21,344 km),” he recalls. 001 km (3958. Mar 02, 2009 · The circumference of the Earth in kilometers is 40,075 km, and the circumference of the Earth in miles is 24,901. (40,076. How many minutes would it take the ISS to complete one orbit around the Earth? d = t ISS v d t ISS = v 42,. polar circumference. The result? 40 008 kilometres. 5. Compute the circumference of the earth using the distance and angle Click here to get an answer to your question ✍️ that earth's equatorial diameter is 12530 km, find the circumference of the equator. ) The circumference of Venus is very nearly the same as the Earth's. The core is found about 2,900 kilometers (1,802 miles) below Earth’s surface, and has a radius of about 3,485 kilometers (2,165 miles). nasa. The Aphelion or the farthest distance is on 4 July when the earth is 152 million km away from sun. We wish to find the height (h) which is the drop in curvature over the distance (d) Using the circumference we find that 1 kilometer has the angle 360° / 40 030 km = 0. Earth is a terrestrial planet and the fifth largest in the solar system. But over 2000 years earlier, a man in Ancient Greece Jan 03, 2018 · Using a stick, Eratosthenes calculated that the Earth’s circumference is approximately 40,030 km, a figure that mid-20th century scientists came up with after launching satellites into space. This length is also used as a unit of distance, especially in astronomy and geology, where it is usually denoted by R ⊕. is usually credited with making the first accurate calculation of Earth's polar circumference more than 1400 years before Columbus' voyages. 5 million sq mi (361. d1 = Horizon distance. 82 miles. 2 km). Oct 17, 2020 · A 70-year-old man, born in Punjab and based in Ireland for over 40 years, has applied for a Guinness World Record after completing what he calls his Earth Walk covering over 40,075 kilometres or the equivalent of the circumference of the Earth in under 1,500 days without stepping out of his home city of Limerick. He calculated Earth's circumference at 26,000 miles (42,000 km), only five percent away from the modern accepted value of 24,901 miles (40,074 km). It takes 24 hours for the Earth to make one full rotation on its axis, and since the planet is bigger at the equator, it has to move faster to make one full rotation. 321 Equatorial radius (km) 6378. Its equatorial circumference is 40,075 km while its axial (from pole to pole) circumference is 40,008 km. 017 km ( 24,901. is a circle around Earth that passes through both the North and South Jan 03, 2018 · Using a stick, Eratosthenes calculated that the Earth’s circumference is approximately 40,030 km, a figure that mid-20th century scientists came up with after launching satellites into space. 60 Sidereal orbit period (days) 365. Find the circumference of a great circle. divide that by 1. May 17, 2007 · Equatorial Circumference . 86 km The metre was originally defined as one ten-millionth part of the polar quartercircumference, so this is easy to remember. 5 million sq mi (148. Therefore, their circumference is the largest at the equator. 3. The difference is caused by the flattening of the poles, such that the Earth has an oblate spheroidal shape. (It's actually a bit flat at the poles, but only by a small amount). 16 km) Earth's Circumference Between the North and South Poles: 24,859. com/TheMathCentre ht The Earth's circumference is 24,901 miles (40,075 kilometers), making it the largest rocky planet in the solar system. 6 km so 8000 mi x 1. The 250,000 stadia equate to 40,000-46,000 kilometers. 1 x 10 8 km 2) Mass: 5. 01 km) longer than the circumference of the globe, could a flea, a mouse, or even a person creep under it? <p>An in depth look at the method offered by Eratosthenes shows that the original calculation for the Earth's meridian circumference was made by the Ancient Egyptians thousands of years before Eratosthenes… So Eratosthenes was convinced of many things back then. An oblate spheroid C. Again, we know that C = πd, and that the diameter of the earth is 12,742km. May 17, 2012 · Columbus thought the circumference of the Earth was 25,255 km while the true figure was around 40,000 (as Eratosthenes determined). Some 150 years later, the mathematician Circumference to diameter. has a circumference of 3 14 Sep 2020 An 88-year-old man has walked 24900 miles, and plans to finish the final mile Oct. ) measured the circumference of the earth from the following observation. 097 3 km One orbit would be the distance around the circle and is called the circumference of the circle. 1 It was accomplished by Dec 28, 2017 · In the mid-20th century, we began launching satellites into space that would help us determine the exact circumference of the Earth, 40,030 km. 82 miles (40,008 km) Earth's Diameter at the Equator: 7,926. b. What is the circumference of the Earth in miles? (Round your answer to the nearest whole number and do not include units or commas in your answer. 4. By the fifth century BCE, the Greeks had firmly established that the earth was a sphere. Hence the circumference of the Earth (at the equator) is about 2 x 3. However, derived from NASA’s value of the (presumably) average diameter of the Earth, 12,756 km, we can approximately calculate is circumference, using equations of the relationship between the diameter or radius of a circle, to its circumference, also incorporating π. And here is a complete list of all articles since the beginning. The pole to pole circumference is 24,859. He found that at the same time, in Alexandria, Egypt, approximately 787 km due north of Syene (now Aswan), the angle of inclination of the sun’s rays was about 7. 752 Volumetric mean radius (km) 6371. The equitorial diameter of the Earth (distance from one side of the Earth to the other at the 15 Oct 2020 Then it wasn't long before the 70-year-old completed 21,344 km, the circumference of Mars, and started to aiming for the circumference of the 22 Sep 2019 A well at Kom Ombo, 50 km north of Syene — from isawnyu The measurement of the Earth's circumference was repeated several decades 5 Nov 2018 Earth's Polar Radius, RP, 6356. Values between 500 and about 600 feet have been suggested, putting Eratosthenes’ calculated circumference between about 24,000 miles and about 29,000 miles. By Pythagorean Theorem we can then calculate the curvature of Planet Earth Mother Earth has a generous waistline: At the equator, the circumference of the globe is 24,901 miles (40,075 kilometers). a. 1 Answer Suryin =) Dec 31, 2015 #40,074. 80052 feet (ft) 1 Ec = 1574803149. The Answer: At the equator, the Earth's circumference is 24,830 miles (40,000 km). 92765 km which is precisely the Lateral Circumference of the Earth at 36 degrees Geodetic Latitude. Making it simple, imagine that it is 333 000 times the mass of the earth. Roughly 2,000 years later, modern equipment calculated the Earth's circumference to be 24,901. With satellites that orbit around our planet, astronomers measured the polar pole circumference of the earth. 306 The following figure shows how Eratosthenes’s earth measurement worked. If you made a circle of wire around the globe, that is only 10 meters (0. Eratosthenes Calculates Earth’s Circumference Thousands of Years Ago. What is the rising action of faith love and dr lazaro? orbital velocity (km/s) 30. Note that 5,165. “Once I accomplished Mars walk, I focused on earth (40,075 km). • The circumference of Earth (distance around Earthat the equator) is approximately 40,000 kilometers (25,000 miles). Sep 15, 2017 · Earth's polar radius is 3,950 miles (6,356 km) — a difference of 13 miles (22 km). Jan 30, 2010 · Therefore, to determine the circumference from the diameter given above: equitorial diameter x 3. 461 mi ]) or around the poles (40,007. The Earth has a circumference of about 40,000 km while Venus has 38,000 km, making Venus' circumference about 95% the The circumference of the Earth around the poles is now measured at around 40,008 km. 3 million sq km). The Eratosthenes made what is considered to be the most famous and accurate of the ancient measurements of the circumference of the Earth. These achievements motivated him further to walk more than the circumference of Mars which was around 21,344. You can fit 9. Pole at Alexandria Well at Syene (Aswan) Parallel sun rays Angle from lengths of the pole and its shadow: 1/50 of a circle (~7°) Center of the Earth Alternate interior angles are equal Pole's shadow 1/50 of a circle ↔ 5 000 stadia (~800 km) ∴ 1 circle ↔ 50 × 5 000 stadia = 250 000 stadia (~40 000 km) 5 000 stadia Alexandria Syene Therefore, the circumference of the Earth, according to Eratosthenes, must be 50 x 580, that is 29000 statute miles. 9891 x 1030 kg. 98 Nautical miles. Circumference: 40 075. He compared the midsummer's noon shadow in deep wells in Syene (now Nov 03, 2020 · This represents Earth. The actual circumference of the Earth is 40, 075 40,075 4 0, 0 7 5 km at the equator. For instance, at precisely 36 degrees Geodetic Latitude the Earth has a Transverse Radius of Curvature of 6385. In the mid-20th century we began launching satellites into space that would help us determine the exact circumference of the Earth: 40,030 km. Show why this objection is wrong by determining the following Size, Mass and Density of the Earth: This study has two parts. 2 (or C = 39,300 km) or 166. Working backward with our 30° and 20° angles of sunbeams, and knowing Earth’s circumference to be about 40,000 km, the trees would have to be some 1,100 km apart (40,000 km/36). He is best known for making the first recorded measurement of the Earth's The Earth's radius (r) is 6371 km or 3959 miles, based on numbers from Wikipedia, which gives a circumference (c) of c = 2 * π * r = 40 030 km We wish to find the height (h) which is the drop in curvature over the distance (d) Using the circumference we find that 1 kilometer has the angle When it comes to measurements from pole-to-pole, or The circumference of the Earth is the perimeter of the earth, i. earth circumference km
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