Area of rectangle = length x width
Area_of_wall = 18ft x 8ft
= 144 ft2
There are: 8 times 18 = 144 square feet
96 square feet.
Total square feet: 144.0
Measure length and height - multiply the sums to equal square footage of wall. Example: Wall measures 8 feet high and 10 feet long: 8 x 10 = 80 ... wall has 80 square feet to cover with wallpaper.
8-ft x 12-ft = 96 square feet
The area of the window is 21.8 square feet.
80 ft
80
8 ft x 20 ft = 160 sq ft.
144 SQ FEET
144
8' x 20' = 160 sq' that is the formula for area.