4o cm (square root of 100x4)
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If each side of a square is 10 cm, the perimeter is 4 x 10 cm = 40 cm.
Perimeter of a square = 4*side = 4*3 cm = 12 cm.
Perimeter of square: 19+19+19+19 = 76 cm
Perimeter of a square = 4 x side units Side = 19 cm So, Perimeter = 4 x 19 cm = 76 cm
Perimeter = 4*22 = 88 cm