Geometry: Common Core (15th Edition)

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: 23

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: $A=π(20)^2=\pi\times400=400\pi\text{ m}^2$
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