If the length of a rectangle is increased by 2cm and the width by 5cm, the area will be increased by 60 square centimeters. It just happens to be a square. What is the original area of this rectangle? Solve by arithmetic I can use equations, too. I don't want to

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• 1. Well, if the length of a rectangle is increased by 2cm and the width by 5cm, it will become a square, and the area is increased by 60 square centimeters. So, the original rectangle is a square
• 2. There is a rectangular piece of hard paper with an area of 90 square centimeters. The ratio of width to length is 3:5. Cut the largest square from it, and the rest is left What's the area of the square centimeter?
• 3. Xiaoyu wants to use a square with an area of 900 cubic centimeters to cut a rectangular piece of paper with an area of 560 cubic centimeters. The ratio of length to width of the rectangle is 2:1 Xiaoyu doesn't know if it can be cut out. Xiao Li said, "obviously, it can be cut out of a large piece of paper. Do you agree with him that rain can be cut out
• 4. There is a rectangle with a square bottom area and a height of 36cm. When the side is expanded, it is just a square. How many cubic centimeters is the volume of this rectangle
• 5. The bottom of a cuboid is a square with a perimeter of 8 decimeters. Its surface area is 20 square decimeters. How many cubic centimeters is its volume?
• 6. Divide a square into two rectangles averagely. The surface area increases by 32 square centimeters. How many cubic centimeters is the volume of this square
• 7. The volume of a cylinder is 176 cubic centimeters, the height is 20 centimeters, and the bottom area is how many centimeters?
• 8. The sum of the edges of the cuboid is 80 cm, and the bottom area is a square with a circumference of 20 cm. The volume of the cuboid is? Cubic cm
• 9. If the width of a cuboid is increased by 3cm, the area will be increased by 27cc. At this time, the figure is just a square
• 10. The volume of a cone is 54 cubic centimeters, the height is 6 centimeters, and its bottom area is______ Square centimeter
• 11. The area of the rectangle is 150cm square, and the length is 5cm more than the width. 1 calculate the length and width of the rectangle To be complete (satisfied with my bonus points)
• 12. The perimeter of a rectangular line is 30cm. If the length and width are increased by 5cm, how many cm square will the area be increased
• 13. Use a 54 cm long wire to form a rectangle. If the length is twice the width, what is the length and width of the rectangle? What's the area?
• 14. The relationship between the area s (square of CM) of the rectangle and the length L (CM) of one side is S = (30 / 2-L) l = 15l-l & # 178; CM & # 178; can you write clearly?
• 15. Circle the 128 cm wire into a rectangle, so that the length is 18 cm more than the width, and calculate the area of the rectangle
• 16. Use a 60 cm long iron wire to form a rectangle. Make the width of the rectangle 2 / 3 of the length, and find the area of the rectangle Help me
• 17. Use a 24 cm wire to form a rectangle. What's the area of the rectangle?
• 18. Use a piece of iron wire to form a rectangle that is 4 / 9 in width and 4 / 9 in length. If it is changed into a square, the length must be shortened by 3.5cm. How long is the iron wire?
• 19. Use 50cm long wire to form a rectangle, so that his area is 154cm. How many cm are her length and width? Please write the detailed process! Thank you~~~
• 20. Use a 54 cm long wire to form a rectangle. If the length is twice the width, what is the length and width of the rectangle? What's the area?