square root of 1400 = 37.42
37.42 x 4 = 150 cm to 3 sig. fig
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Oddly enough the perimeter is 16 centimeters.
24 cm
52 cm
For a square area = side2; perimeter = 4 x side. side2 = 1225 sq cm => side = sqrt(1225) = 35cm => perimeter = 4 x 35cm = 140cm.
Each side is 8cm so the perimeter is 4*8 = 32 cm