Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 2 - Solving Equations - Chapter Review - Page 154: 35


15 mm is the radius.

Work Step by Step

Recall the following equation: $c=2\pi r$, where r is radius and c is circumference. We plug in the values given to obtain: $94.2=(2)(3.14)(r) \\\\ 94.2=6.28 \times r$. We simplify by dividing both sides of the equation by 6.28 to obtain that the radius is 15 mm.
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