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The circumference of the earth in kilometers is 40 075 km and the circumference of the earth in miles is 24 901. The circumference of the earth is 40 075 km and the greek geographer erastosthenes was the first person to estimate the earth s circumference nearly accurately.

Eratosthenes C 275 194 Bc Trigonometry Flat Earth Society

In other words if you could drive your car around the equator of the earth yes.

Circumfrence of the earth. He also knew that the circumference of a circle was equal to 2 times π 3 1415 times the radius of the circle. Using those measurements the equatorial circumference of earth is about 24 901 miles 40 075 km. The first known scientific measurement and calculation was done by eratosthenes who.

So he multiplied 500 by 50 to arrive at his estimate of the earth s circumference. This estimate was only 100 miles off the actual circumference of 24 900 miles. Before erastosthenes other scholars had attempted to estimate the figure but their methods were not recorded and their estimations were far from accurate.

C 2πr with this information eratosthenes inferred that the earth s radius was 6366 km. This means that eratosthenes estimated the circumference of the earth to be about 40 000 km. Earth s polar radius is 3 950 miles 6 356 km a difference of 13 miles 22 km.

Around the poles it measures almost exactly 40 000 kilometres or 21 600 nautical miles due to the circumference being used to define those units of measurement. Earth s circumference is the distance around the earth. Measurement of earth s circumference has been important to navigation since ancient times.