The perimeter of a rectangle is 24 cm, and the ratio of length to width is 2:1. How many square centimeters is the area of the rectangle?
One is: 24 △ 2 △ 2 (1 + 2), = 24 △ 2 △ 3, = 4 (CM), length: 4 × 2 = 8 (CM), width: 1 × 4 = 4 (CM), area of rectangle: 8 × 4 = 32 (square cm), answer: area of rectangle is 32 square cm
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