Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 1 - Graphs - 1.4 Circles - 1.4 Assess Your Understanding - Page 40: 60

Answer

$3$

Work Step by Step

We know that circumference$=2\pi\cdot r$, where $r=\text{radius}$. Hence $6\pi/2\pi r\\6=2 r\\r=3.$
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