If the length of a rectangle is reduced by 5 cm, the area will be reduced by 40 square cm. The rest is just a square. The area of the original rectangle is 40 square cm______ Square centimeter

The length of the square: 40 △ 5 = 8 (CM), the area of the rectangle: (5 + 8) × 8, = 13 × 8, = 104 (square cm); answer: the area of the original rectangle is 104 square cm. So the answer is: 104

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