Also the second largest impact structure on Earth, the 1.85 billion years old Sudbury crater in Canada, hosts world-class mineral deposits - in this case nickel-rich minerals that were melted and concentrated by the extreme heating caused by the impact.
The circumference of Earth at the equator is about 24,902 miles (40,075 km), but from pole-to-pole â the meridional circumference â Earth is only 24,860 miles (40,008 km) around. This shape, caused by the flattening at the poles, is called an oblate spheroid.
5,000 7.2. Circumference of the Earth = 5,000 x 50 = 250,000 stadia. (In km, the circumference of the Earth = 250,000 x 0.185 = 46,250 km) The actual circumference of the Earth from pole to pole is 40,008 km and so. Eratosthenes had achieved a very respectable result.