Answer
See explanation
Work Step by Step
$$A=\frac{\theta}{2\pi}\pi r^2$$
Cancel $\pi$:
$$A=\frac{1}{2}\pi r^2$$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 6 - 6.1 - Angles and Their Measure - 6.1 Exercises - Page 433: 117
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