Answer
$A=400\pi\text{ m}^2$
Work Step by Step
To find the area of a circle, we use the formula $A=πr^2$
The circle shown has a radius of $20\text{ m}$. We plug this value into the formula and simplify: $A=π(20)^2=\pi\times400=400\pi\text{ m}^2$
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 1 - Tools of Geometry - 1-8 Perimeter, Circumference, and Area - Practice and Problem-Solving Exercises - Page 65: 23
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