Section: Mathematical Reasoning

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?

1. 72
2. 84
3. 96
4. 180
5. 756

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.