Solving Circumference At The Equator

Assuming the equatorial radius of the earth is 3444 nm, find the circumference of the equator.

Given:

           Equatorial radius = 3444 nm

What is asked?

           Circumference of the earth at the equator.     

 Solution:

           This is the formula for the circumference;

           Circumference = 2π r

                                  = 2 × 3.1416 × 3444 nm

                                  = 21,639.3 nm is the circumference of the earth at the equator.