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Question:

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.
Explaination

Area of front wall = 40 x 8 = 320 sq. ft. We multiply this by 2 since the front and back walls are the same. 320 x 2 = 640 sq. ft. Area of side\u00A0wall = 8 x 12 = 96 sq. ft. We multiply this by 2 since the front and back walls are the same. 96 x 2 = 192 sq. ft. Total area of walls = 640\u00A0+ 192 = 832\u00A0sq. ft.