Answer
$r=0.375$ cm
Work Step by Step
The formula $s=r\theta$ requires the angles to be in radius.
Hence here the equation: $\pi/4=2\pi/3r\\r=0.375$ cm
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapters 1-8 - Cumulative Test - Page 477: 7
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