If you mean that the square has side equal to 20 cm, then the area is
20 x 20 = 400 square cm
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Yes a square inch is larger than a square cm
If the perimeter of a square is 30 cm, each side is 7.5 cm and the area is 56.25 sq cm. For a square to have an area of 30 sq cm each side would have to be 5.48cm.
169 cm square.
Area of circle = 78.54 sq cm => Radius of circle = 5 cm => Diameter of circle = 10 cm => Side of square = 10cm => Area of square = 100cm2
It is 48 cm.