## Elementary Geometry for College Students (7th Edition)

Published by Cengage

# Chapter 8 - Review Exercises - Page 395: 6

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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