There is a rectangle. The ratio of length to width is 7:5. It is known that the circumference of the rectangle is 48CM. What is the area of the rectangle?
48 △ 2 = 24 (CM) 24 × 77 + 5 = 14 (CM) 24 × 57 + 5 = 10 (CM) 14 × 10 = 140 (square cm); answer: the area of this rectangle is 140 square cm
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