Question

the area of a square is 441cm2 find the perimeter

Answer 1

area of square is s²
area=441
s²=441
s=√441
s=21
perimeter is 4s
=4*21
perimeter=84
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Answer 2

area of the square
$= {a}^{2} = 441 {cm}^{2} \\ a = \sqrt{441} \\ a = 21$
perimeter of square=4a=4×21=84cm
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