Question

The circumference of a circle is 60 pi cm3What is the radius of the circle

Answer 1

r = 9.5492965855137 cm

Explanation:

Answer:

r = 9.5492965855137 cm

C = 60 cm

A = 286.47889756541 cm²

Answer 2

The radius r = 30 cm

Explanation:

The formula of a circumference of a circle:

`C=2\pi r`

r - radius

We have
`C=60\pi\ cm^3`

Substitute:

`2\pi r=60\pi\qquad|\text{divide both sides by }\ 2\pi\\\\(2\pi r)/(2\pi)=(60\pi)/(2\pi)\\\\r=30`