Question

The radius of the earth is approximately 6400 km. The equator is the circle around the earth dividing it into the northern and southern hemisphere. (The center of the earth is also the center of the equator.) What is the length of the equator?

Answer 1

Given :-

Radius of Earth (r) = 6400km

To Find :-

Length of equator i.e circumference (2πr) = ?

Solution :-

Length of equator = 2πr

=> 2 × 3.14 × 6400 [ Taking π(pi) as 3.14 ]

=> 6.28 × 6400

=> 40192 km