It depends on the units of measurement for 1 x 2. A 1 cm by 2 cm rectangle is exactly 2 cm long - assuming that the length is taken to be the longer side.
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The area of rectangle is : 100.0
28 cm
If the shape measuring 8 centimeters by 5 centimeters is a rectangle, the perimeter of the rectangle is 25 centimeters (2w + 2l)
101.94 cm = (36.25 + 14.72) X 2
If it is 4.68 cm long by 2.01 cm wide, then the area is 4.68 x 2.01 = 9.41 square centimeters.