#### Answer

A=36

#### Work Step by Step

h$^2$=AB$^2$-(.5(AD-BC))$^2$
h$^2$=25-9
h$^2$=16
h=4
A=.5h(AD+BC)
A=.5(4)(18)
A=36

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Brooks Cole

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A=36

h$^2$=AB$^2$-(.5(AD-BC))$^2$
h$^2$=25-9
h$^2$=16
h=4
A=.5h(AD+BC)
A=.5(4)(18)
A=36

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