the perimeter of the square whose area is 441 cm square and the length of the side is 21 cm find the perimeter of a square
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4
perimeter = 4 * one side
= 4 * 21 cm
= 84 cm
Answered by
4
84
perimeter of a square=4a
where a is the length of 1 side
so 4×21=84
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