The positive square root of 289 is equal to 17. Therefore, one side of the patio will be 17 feet long.
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Square root of the area.
56 square feet is the area of 56 square feet a square foot is unit used to measure area. For example something could be 5 feet long, but it couldn't be 56 square feet long. A foot is a measurement of length, and a square foot is a measurement of area.
A square with a side length of 2cm has an area of 4cm2
The area in square feet is FAIL.
6 inches