Answer
161.6 cm$^2$
Work Step by Step
A=41.6+6(20)
A=41.6+120
A=161.6
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 9 - Section 9.2 - Pyramids, Area, and Volume - Exercises - Page 421: 10
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