A swimming pool is 40 feet long, 12 feet wide, and 8 feet deep. How many square feet of paint is needed to cover the walls\u00A0of the pool?

A 832 sq. ft.

explanation

Area of front wall = 40 × 8 = 320 sq. ft.
We multiply this by 2 since the front and back walls are the same.
320 × 2 = 640 sq. ft.
Area of side\u00A0wall = 8 × 12 = 96 sq. ft.
We multiply this by 2 since the front and back walls are the same.
96 × 2 = 192 sq. ft.

Total area of walls = 640\u00A0 + 192 = 832\u00A0sq. ft.