If the length and width of a rectangle are all integral centimeters, and the area of the rectangle is 24 square centimeters, what is the perimeter of the rectangle?
24 = 1 × 24 = 2 × 12 = 3 × 8 = 4 × 6, so the length and width of a rectangle can be as follows: (1) the length and width are 24 cm and 1 cm respectively, and the perimeter is (24 + 1) × 2 = 50 cm, (2) the length and width are 12 cm and 2 cm respectively, and the perimeter is (12 + 2) × 2 = 28 cm, (3) the length
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- 7. The length and width of a rectangle are prime numbers, and the perimeter is 36cm. What is the maximum area of the rectangle?
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- 11. It is known that the circumference of a rectangle is 24 cm, and one side is a cm
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- 14. There is a rectangle with a circumference of 16 cm. It is made up of three squares
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- 18. After cutting a circular piece of paper, put it together into an approximate rectangle with the width equal to the radius and the area unchanged. The perimeter of the rectangle is 16.56 cm. What is the area of the cut circular piece of paper in square cm?
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