The circumference of a rectangle is 18 cm, and its length and width are in whole centimetres. What is the area of the rectangle? Please write down

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• 1. For a rectangle, the ratio of length to width is 14:5. If the length is reduced by 13 cm, the width is increased by 13 cm, and the area is increased by 18 square cm, the area of the original rectangle can be calculated
• 2. 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
• 3. When the length of a rectangle is removed by 5cm, the area will be reduced by 40cm, and the remaining part is just a square. How many square centimeters is the area of the original rectangle
• 4. If the length of a rectangle is reduced by 5 cm, the area of the rectangle will be reduced by 40 square cm, and the rest is just a square, which is the same as the original rectangle
• 5. For a rectangle, its length is reduced by 5cm, or its width is reduced by 4cm, and its area is reduced by 40 square centimeters. What is the area of this rectangle
• 6. If the length of a rectangle is reduced by 1 cm and the width is increased by 3 cm, the square will be 21 cm larger than the original rectangle. What is the length and width of the original rectangle? As soon as possible
• 7. If you increase the width of a rectangle by 5cm and decrease its length by 3cm, it becomes a square. It is known that the area of a square is 75 square centimeters larger than that of a rectangle How many square centimetres is the area of a square
• 8. The width of a rectangle is 0.625 of its length. If the width increases by 7cm and the length decreases by 5cm, the rectangle will become a square. Find the area of the original rectangle
• 9. The width of a rectangle is three seventh of its length. If the length is reduced by 23 cm and the width is increased by 13 cm, it will become a square. What is the area of the original rectangle? Use the formula
• 10. The ratio of the length to the width of a rectangle is 7:3. If the length is reduced by 12cm and the width is increased by 16cm, it becomes a square to calculate the area of the original rectangle
• 11. Put two rectangles 18 cm in length and 8 cm in width together to form a large rectangle. The area of the large rectangle is {} square centimeter and the perimeter is {} centigrade
• 12. The Ling length of a large square is twice that of a small square. The volume of a large square is 35 cubic centimeters more than that of a small square. What is the volume of a small cube
• 13. The edge length of the large cube is twice that of the small cube, and the volume of the large cube is 21 cubic decimeters more than that of the small cube. What is the volume of the small cube?
• 14. There is a figure, the upper left corner is a small square, the big square in the lower left corner of the small square, known as two squares There is a figure, the upper left corner is a small square, and the large square is in the lower left corner of the small square. It is known that the area of the overlapping part of the two squares is equal to 1 / 9 of the area of the large square and 1 / 4 of the area of the small square. The ratio of the area of the large square to the area of the small square is calculated
• 15. How to make a big square with two squares of equal area and side length
• 16. The circumference of a rectangle is between 401cm and 50cm. The ratio of its length to width is 5:7. What is the area of the rectangle?
• 17. There are two rectangles of the same size, 36 cm in length and 18 cm in width. What is the circumference of a square?
• 18. There are two rectangles of the same size, 36 cm in length and 18 cm in width. (1) what is the circumference of a square? There are two rectangles of the same size, 36 cm long and 18 cm wide (1) What is the circumference of a square? (2) What is the circumference of a rectangle? (3) Is the area of the two figures equal? What is the area? How to make a formula?
• 19. The perimeter is 36cm square and rectangle, the width of the rectangle is 20% of the length, the area of the rectangle is the square area? Formula OK, add 30
• 20. The perimeter of a rectangle is 50 meters, and the ratio of length to width is 3:2. The area of the rectangle is______ Square meters