Answer
18 in
Work Step by Step
As we know the area of the triangle have length of base as b and altitude of h
A = $\frac{1}{2}$ * b*h
Given Area = 72 $in^{2}$, base b= 8 in
72 = $\frac{1}{2}$ * 8*h
h = $\frac{72}{4}$ = 18 in
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 8 - Section 8.2 - Perimeter and Area of Polygons - Exercises - Page 370: 20
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