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? 


72 

84 

96 

180 

756 


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.




