Sam made a square sign with an area of 410 square inches.What is the approximate perimeter of the square sign?

i have no idea what the answer is??...
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the area of the square is 410 square inches each side is sqrt(410) = 20.248 in approx so the perimetre

is 4 x 20.248 = 81 inches approx
by Level 5 User (13.1k points)

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