Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 8 - Review Exercises - Page 385: 17



Work Step by Step

A=(.5$\times$11$\times$12)-(4$\times$4)-(.5$\times$4$\times$7)-(.5$\times$8$\times$4) A=66-16-14-16 A=20
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