If the area is 81 millimeters, the side length is the square root of that, or 9 millimeters.
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Side of a square= take out the square root Area=169cm ² Square root of 169= 13 Side= 13 cm²
The area of this square is 104 square feet.
A square with a side length of 6 inches has an area of 36 square inches.
The side length of a square if it has an area of 300 square inches is: 17.32 inches.
To get the area of a square, you square the length, ie area = LxL