Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Appendix A - A.2 - Formulas and Equations - Exercises - Page 549: 20

Answer

$16\pi$

Work Step by Step

$S = 4\pi \times r^2$ By replacing the letters with their values (r=2) We have: $S = 4\pi \times 2^2= 16\pi$
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