Answer:
The number of wallpaper Stanley will need to cover the walls of his bathroom is
20.909090901
To significant figure = 21 wallpapers
Explanation:
Total area of the bathroom wall= 460ft²
Area of each strip of wallpaper = 22ft²
The number of wallpaper Stanley will need to cover the walls of his bathroom is = 460/22
= 20.909090901
To significant figure = 21 wallpaper