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Perimeter of a Rectangle

The area of s...

Question

The area of square is $81 c m^{2}$ Find the perimeter of square.

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Solution

The area of square is $a^{2} = 81 c m^{2} a = \sqrt{81 c m^{2}} a = 9 c m$
The perimeter of square is $4 a = 4 (9) = 36 c m$

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