Answer:
21
Explanation:
We are given that Stanley is putting wallpaper strips on his bathroom walls that have a total area of 460 square feet.
Area of each strip =22 square feet
We have to find the number of strips of wallpapers will Stanley need to fully cover his walls.
In order to find the number of strips of wall papers we are dividing the area of walls by area of each strips
Number of strips of wall paper=

Number of strips of wall paper=20.909 =21 strips of wallpaper
Hence, Stanley will need strips of wallpaper to cover fully his walls=21