Answer
$7.31\ cm$
Work Step by Step
The area of the circle is given by:
$$Area=r^2 \pi = 168\Longrightarrow r^2=\frac{168}{\pi}=53.476$$
Now, we solve for $r$:
$$r=\sqrt{53.476}=7.31\ cm$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 12 - Cumulative Review - Page 447: 29
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