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.
2. so 24000 mi = 2 x 3 x r = 6 x r. 3. therefore 24000 mi / 6 = r = 4000 mi. 4. the diameter of the earth is 2 x r = 8000 mi, where the diameter is 2 times the radius. 5. 1 mi = 1.6 km so 8000 mi x 1.6 km/mi = 12800 km. (the correct answer is ~12742 km) So you can always figure out the dimensions from your basic knowledge of traveling!