#### 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

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Published by
Brooks Cole

ISBN 10:
9781285195698

ISBN 13:
978-1-28519-569-8

18 in

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