Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 1 - Tools of Geometry - Common Core Cumulative Standards Review - Selected Response - Page 77: 4



Work Step by Step

Find the area of each wall, of the window, and of the door. $A_1=bh=12\times8=96$ $A_2=bh=12\times8=96$ $A_3=bh=10\times8=80$ $A_4=bh=10\times8=80$ $A_d=bh=3\times7=21$ $A_w=bh=6\times5=30$ Find the total wall area. $A=A_1+A_2+A_3+A_4=96+96+80+80=352$ Find the total area of the window and door. $A=A_w+A_d=30+21=51$ Deduct the area of the window and door from the total wall area. $A=352-51=301$
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