Question

You are wallpapering a wall 10 feet wide and 12 feet high with a square window with 3 foot sides. How many square feet of wallpaper do you need to cover the wall?

Answer 1

Hey there!


First you need to see how much you need to buy, and when you do 10 x 12 = 120.


So you need at least 120 feet to cover the wall.
 Now you have to factor in the wall, when you do 3 x 3 (B x H) = 9.
Now do, 120 - 9 = 111.

So you need 111 square feet to cover the wall.

Hope this helps!