What is the perimeter (পরিসীমা) Of a square, if its area is 400sq-m.

What is the perimeter (পরিসীমা) Of a square, if its area is 400sq-m. Correct Answer 80 m

area = 400 sq-mlength = 400 = 20 mperimeter = 4*length                    = 4*20 = 80 (Ans)
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