Answer
38 ft$^2$
Work Step by Step
L=3$\pi$(4)
L=12$\pi$
L$\approx$38 ft$^2$
Elementary Geometry for College Students (6th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
9781285195698
ISBN 13:
978-1-28519-569-8
Chapter 9 - Section 9.3 - Cylinders and Cones - Exercises - Page 418: 49
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