Question

Carlos is shopping for a cap. He knows that his head circumference is 22 inches. What size of cap should he buy to fit his head best?

Answer 1

`7\ in`

Explanation:

we know that

The circumference of a circle is equal to

`C=\pi D`

where

D is the diameter of the circle

In this problem we have

`C=22\ in`

substitute and solve for D

`22=(3.14156)D`

`D=22/(3.14156)=7\ in`