Answer
$r=\frac{C}{2\pi}$; circumference of a circle
Work Step by Step
Divide both sides by $2\pi$.
$C=2\pi r$ for $r$
$r=\frac{C}{2\pi}$
This formula is for the circumference of a circle.
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 1 - Equations and Inequalities - Exercise Set 1.3 - Page 135: 60
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