Question

The circumference of a circle can be found using the formula C = 2pi r. Which is an equivalent equation solved for r?

Answer 1

Answer: C

Explanation:

Answer 2

`(C)/(2\pi ) =r`

Explanation:

Recall to find the circumference of a circle the formula is
`C=\pi d` or
`C=2\pi r`. Since we need r, we will use the second formula for circumference.

We start by solving for r in the Circumference formula. using inverse operations. We divide both sides (as the inverse of multiply) by 2pi.

`C=2\pi r\\(C)/(2\pi ) =r`.