A square foot is a unit of surface area, while a mile is a unit of distance. A mile has 5,280 feet and a square mile has 27,878,400 square feet.
A square’s area is computed by multiplying one side’s length by itself. The area of a square with each side equal to one mile is one square mile. The sides of a square mile are 5,280 feet long. 5,280 multiplied by 5,280 = 27,878,400. In feet, the volume of a cubic mile is computed by multiplying one side of the cube by itself twice. 147,197,952,000 cubic feet per cubic mile is the result.
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