3cm x 3cm = 9 cm^(2(.
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It is: 3 times 3 = 9 square cm
A square with a side length of 3 cm has an area of 9 cm2
3 x 5 cm = area 15 square cm BUT a shape 3 x 5 is not a square, it is a rectangle. A square would either be 3 x 3 or 5 x 5 size.
5*3 = 15 square cm
Area of rectangle: 3 times 14 = 42 square cmPerimeter of rectangle: 3+14+3+14 = 34 cm