With a rectangle, the area is length x width. So, 11x30=330cm.
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Area : 44cm² Perimeter : 30cm
Area = 11*6 = 66 cm2
To calculate the perimeter of a rectangle, you need to add together the length of each side of the rectangle. For a rectangle that is 11cm x 4cm, you would add these numbers together, then multiply it by 2 (this is because there are two sides that are 11cm and two sides that are 4cm). Thus: (11+4) x 2 = 30cm.
88cm2, but it's a rectangle, not a square.
30cm