The square mile (abbreviated as sq mi and sometimes as mi ) is an imperial and US unit of measure for area . One square mile is equal to the area of a square with each side measuring a length of one mile .
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1-442: A mile square is a unit of measurement for area. Mile Square or variation , also may refer to: Mile square One square mile is equal to: One square mile is also equivalent to: Square miles should not be confused with miles square, a square region with each side having a length of the value given. For example, a region which is 20 miles square ( 20 miles × 20 miles ) has an area of 400 sq mi ;
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