Question

One roll of wallpaper covers 300 square feet. What is the least number of rolls of wallpaper needed to cover the walls of a room in the shape of a rectangular prism with a length of 15 feet, a width of 15 feet, and a height of 9 feet?

Answer 1

Answer: 1.8sqft

Explanation:

It says just walls not top and bottom so if you just find the area of the left (135), right(135), front(135) and back(135) you divide 135 by 300 and get 0.45 then you multiply that by 4 0.45x4=1.8

Answer 2

The correct answer is C 160