Question

The circumference of the earth is about 25,000 miles. Approximately how far is it from any point on the earth's surface to its center?

7,962 miles
3,981 miles
12,500 miles
78,500 miles

Answer 1

3,981 miles

Explanation:

25,000 / 3.14 = 7,962 / 2 = 3,981 miles

Answer 2

12,500 miles. 25,000 / 2 = 12,500.