Section: Mathematical Reasoning
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65)  A room is 24 feet long, 18 feet wide, and 9 feet high. How many square yards of wallpaper are needed to paper the four walls of the room?
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72
84
96
180
756
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Explanation of Answer:
Area of front wall =
9 x 24 = 216 sq. ft.

Area of back wall
9 x 24 = 216 sq. ft.

Area of side wall =
9 x 18 = 162 sq. ft.

Area of other side wall =
9 x 18 = 162 sq. ft.

Total area of walls =
216 + 216 + 162 + 162 = 756 sqft.
756 / 9 = 84 sq. yd.
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