Question

The circumference of a pool is 47 feet. Which formula can you use if you know that C =2 pie r

Answer 1

We use formula, circumference=
`2\pi r` to get r= 7.48

Explanation:

Here is the complete question: The circumference of a pool is 47 feet. Which formula can you use to find Radius (r), if you know that C =2πr.

Given: Circumference= 47 feet.

We will use formula of circumference to find radius (r) as given.

Circumference =
`2\pi r`

⇒
`47\ feet= 2* 3.14* r` (∵ we know π=3.14)

Cross multiplying both side to get r.

⇒ r=
`(37)/(2* 3.14) = 7.48`

∴ radius (r)= 7.48

∴ We will use circumference formula
`2\pi r` to find Radius (r).