Question

The perimeter of a quarter circle is 35.7 millimeters. What is the quarter circle's radius?

Answer 1

r = 10 mm

Explanation:

Formula of a quater circle perimeter: P = (
`(\pi )/(2)` + 2 )r

You substitute the given perimeter then you'll have something that looks like this : 35.7 = (
`(\pi )/(2)`+2)r

Then you divide both sides by (
`(\pi )/(2)`+2) to get the answer