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Rectangles with area 36 sq cm have whole-number sides. Which has the smallest perimeter?

A9 cm by 4 cm
B12 cm by 3 cm
C6 cm by 6 cm
D18 cm by 2 cm
Answer & Solution
Correct answer: C. 6 cm by 6 cm
The perimeters are 26, 30, 24 and 40 cm, so the 6 by 6 square has the smallest.
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