Regina wants to cover one wall of her room with wallpaper. the wall is 9 feet high and 15 feet wide. there is a doorway in the wall that is 3 feet wide and 7 feet tall. how many square feet of wallpaper will she need to buy?
First you need to find area of the wall : 9x15 Then Find the area of the door : 7x3 After that you subtract the area of the door from the wall and you should get____??
