Question

Taking the earth to be the sphere of radius 6378000m, find the circumference of the equator of the earth. Give your answer in km and in terms of pi.

Answer 1

12756pi km

Explanation:

Circumference = pi * diameter

Diameter = radius * 2

kilometer = meter/1000

6378000*2= 12756000

diamter = 12756000 meters

12756000/1000 = 12756 kilometers

diameter = 12756 kilometers

12756pi km= circumference