1 ft. is 12 inches long. 12 "squared" is 144 inches and the square root of 144 is 12. OR- 12x12 is 144
A foot refers to length and "square ft." refers to area. One acre consists of 43,560 "square feet" which tells you how many square ft. within while the "perimeter of 1 acre would be the length of each side added together.
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