Assuming that it is a square of 9 cm by 9 cm, the perimeter is 36 cm.
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If it's a square, then each side should be 3 cm, meaning perimeter is 12cm
The area of square with a perimeter of 36 is 81. If the perimeter is 36, then each side must be 36 divided by 4, or 9. The area of a square is side squared, so that is 9 squared or 81.
To find the area of a square if the perimeter is given, we must divide it by 4. Here, we have to divide 12 by 4, which is 3. The area of a square is side squared, so that is 3 squared or 9.
area comes out with squared units of measurement, volume with cubed, perimeter stays to the power of 1.
Since squared centimeters is cm^2 then instead of converting it normally from centimeters to meters you would multiply it by 2.