## Geometry: Common Core (15th Edition)

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. $A=352-51=301$