Question

Find the radius of a circle with the given circumference.

15 ft.

r =

A.30 ft.
B.30 ft.
C.7.5 ft.
D.7.5 ft.

Answer 1

Answer:
`(7.5)/(\pi)\ ft`

Explanation:

We know that , the circumference of a circle is given by :-

`C=2\pi r` , where r is the radius of the circle.

Formula for radius :

`r=(C)/(2\pi)` , where C is the circumference of the circle.

Given : Circumference of circle = 15 ft.

Then , the radius of a circle will be :-

`r=(15)/(2\pi)=(7.5)/(\pi)\ ft`

Hence, the radius of a circle=
`(7.5)/(\pi)\ ft`