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The two sides of a 1-acre rectangular lot can be any lengths as long as multiplying one by the other gives 43,560 (if the sides were measured in feet). if a 1-acre lot is a square, its sides will be 208.7103256 feet long (208.7103256 Ã 208.7103256 = 43,560). Imagine a sidewalk 5 feet wide.
Best Answer: An acre is equal to 43,560 square feet or 4046.85 m^2, so 1/2 acre = 21,780 square ft (ft^2) An acre is a unit of area, so the length and width can be anything that adds up to 43,560 ft^2. 147.58 ft X 147.58 ft = 21,779.85 ft^2. 100 ft X 217.8 ft = 21,780 ft^2. 5 ft X 4356 ft = 21,780 ft^2.