Question

the distance around earth at the equator is about 40,074 kilometers. find the Equatorial diameter of earth to nearest kilometer

Answer 1

Circumference = (pi)(d) so, diameter = C/pi. 40,074 km divided by pi = 12,756km

Answer 2

The distance is the circumference which is equal to:

C=πd where C=circumference and d=diameter...

d=C/π

d=40074/π km

d≈12755.95 km

d≈12756 km (to nearest whole kilometer)