# Chapter 2 - Section 2.3 - Formulas and Problem Solving - Exercise Set: 15

$r=\frac{C}{2\pi}$

#### Work Step by Step

We are given that $C=2\pi r$. In order to solve for r, we can divide both sides by $2\pi$. $r=\frac{C}{2\pi}$

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.