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13 September, 02:30

What is the perimeter of a square with an area of 441 cm2?

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  1. 13 September, 02:41
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    Area of the square = side x side = side ^2

    therefore to find a length of one side = Square root of the 441

    sqrt of 441 = 21 cm

    so the perimeter of a square is 21 x 4 = 84 cm
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