Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Appendix A - Review - A.2 Geometry Essentials - A.2 Assess Your Understanding - Page A19: 29


$78.54\ m^2, \ 31.42 \ m$

Work Step by Step

Since $r=5~m$, then the area $A$ and circumference $C$ of the circle are given by $$ A=r^2\pi=5^2\pi=78.54\ m^2\\ C=2r\pi=2\times5 \pi= 31.42 \ m .$$
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