Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 8 - Section 8.4 - Circumference and Area of a Circle - Exercises - Page 383: 1


c = 16$\pi$ cm A = 64$\pi cm^{2}$

Work Step by Step

Given the radius of the circle = 8cm The circumference of the circle is given by the formula c= $\pi$ d = 2$\pi$ r =2$\pi$ * 8 = 16$\pi$ cm The area A of a circle whose radius has length r is given by A = $\pi r^{2}$cm = $\pi 8^{2}$ =64$\pi cm^{2}$
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