Question

you've been contracted to wallpaper a wall 10 ft wide and 12 ft High with a square window with 3-foot sides. How many square feet of wallpaper do you need to cover the wall if you were to exclude the opening for the window? _Square feet

Answer 1

Find the total area of the wall, including the window area:  (10 ft)(12 ft) = 120 ft^2.

Next, find the window area:  (3 ft)^2 = 9 ft^2

and, finally, subtract the window area from the total wall area:  (120-9) ft^2, or

111 ft^2.  The total amount of wallpaper needed, with zero waste, is 111 ft^2.

Answer 2

111 square ft would be the answer