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There are an infinite number of rectangles with this perimeter.

The "whole number" sides could be (5 x 1), (4 x 2) or (3 x 3), but (5½ x ½) or (3¼ x 2¾) etc would fit the description.

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Q: What are the lengths of the sides of three rectangles with the perimeter of 12 units?
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