## Elementary Geometry for College Students (6th Edition)

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