since A=4S then S=A/4
A is not 4S. The perimeter P is 4S.
The area is S multiplied by S or S squared.
therefore the side of a square is the square root of the area.
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If the side length is s units then the area is s2 square units. So, given the area, take the principal square root.
The length of each side of a square is numerically equal to the square root of the area.
All four sides of a square are of equal length. To find the area, you square the length of one side. To find the length of one side from the given area, find the square root of the area. In this case, the square root of 25 is 5. Hence, the length of a side is 5 yards.
You find the square root an then label it as the side.
If you have the area, the square root of the area gives the side. For example, if the area is 9, the side is 3 (3 x 3 = 9).