Question

A certain machine is to contain two wheels, one of radius 2 inches and one of radius 8 inches. The

manufacturer of this machine needs to produce a belt that will fit snugly around the two wheels,
as shown in the diagram below. How long should the belt be?

Answer 1

62.83 in

Explanation:

C is circumference

r is the radius

We sum up both, given first one radius is 2 and second one radius is 8, so we have:

The length of the belt should be around 62.83 in