A rectangle with a circumference of 120 cm has a length to width ratio of 7:5. What's the area of the rectangle?
120 △ 2 = 60 (CM), 60 × 77 + 5 = 35 (CM), 60-35 = 25 (CM), 35 × 25 = 875 (square cm); answer: the area of this rectangle is 875 square cm
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