Answer
116.5
Work Step by Step
We know that lateral area is equal to the area of all of the faces of the shape except for the base. Thus, recalling that there are 4 faces, we obtain:
$A = (1/2)(4)(3)(9.71) = 116.5$
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 11 - Section 11.3 - The Tangent Ratio and Other Ratios - Exercises - Page 519: 46b
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