Multiply a length and width together, which have units of feet.
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To get the area of a shape in square feet, you need to multiply the length and width of the shape. For example, if you have a rectangular room that is 10 feet long and 12 feet wide, you would multiply 10 by 12 to get 120 square feet.
1 sq mi=5280ft x 5280ft = 27878400 sq ft/sq mi/ 27,878,400 sq ft/sq mi divided by 640acres/sq mi = 43,560 sq ft /acre 1 acre = 43,560 sq ft
3 sq yards = 3*9 sq ft = 27 sq ft
9 sq ft = 1 sq yd525 sq ft = 581/3 sq yd
1 sq yd = 9 sq ft 300 sq yd = 2,700 sq ft
8072.93 sq ft