Question

The perimeter of a quarter circle is 3.57 kilometers. What is the quarter circle's radius? Use 3.14 for . kilometers Siubmit explain

Answer 1

Given:

It is given that the perimeter of a quarter circle is 3.57 km.

To find :

The radius of the quarter circle.

Explanation :

The perimeter of the quarter circle is

`P=(2\pi r)/(4)\text{ }+2r`

Substitute the value of perimeter in the above formula

`3.57=(\pi r)/(2)+2r`
`3.57=((3.14)/(2)+1)r`
`3.57=2.57r`
`r=1.39`

Answer

Hence the radius of a quarter circle is 1.39 km.