Answer
$12.57\ ft^2, \ 12.57\ ft$
Work Step by Step
Since $r=2~ft$, then the area $A$ and circumference $C$ of the circle are given by
$$
A=r^2\pi=2^2\pi=12.57\ ft^2\\
C=2r\pi=2\times 2 \pi= 12.57 \ ft
.$$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
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: 30
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