The average radius of the Earth is 3,959 miles. The equitorial diameter of the Earth is about 7,926 miles. ChaCha!
The circumference of the earth at the equator is 24,902 mi / 40,076 km. Thanks for using ChaCha!
The circumference at the equator is around 25,000 miles (40,000 km). ChaCha again!
The circum. of the earth at the equator is 24,901.55 miles, but if you measure it through the poles the circum. is 24,859.82 miles