40 pieces of the same square wood can be piled into a cuboid 30 decimeters long, 20 decimeters wide and 15 decimeters high. How many cubic decimeters is the average volume of each square wood?

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• 1. Cylinder: r = 2m, H = 1.5m, calculate the surface area and volume
• 2. A cuboid fish pond is 8m long, 4.5m wide and 2m deep. What is the volume of the pond? A cuboid fish pond is 8m long, 4.5m wide and 2m deep. What is the volume of the pond?
• 3. A cuboid fish Tang is 8m long, 4.5m wide and 2m deep. What is the volume of this fish Tang
• 4. Please solve a mathematical problem: saw a 20dm long cuboid wood into three sections on average, the surface area increased by 28dm, what is the original volume of this wood?
• 5. After sawing a 20dm long cuboid into three equal sections, the surface area increases by 24 square decimeters. What is the volume of this section of wood?
• 6. A cube with a surface area of 54 square decimeters is sawn into two cuboids. The sum of the surface areas of the two cuboids is () square decimeters A. 108B. 72C. 54
• 7. Saw a cube with an edge length of 3 decimeters into two cuboids. What is the sum of the surface areas of the two cuboids?
• 8. There is a cube. Divide it into 24 small cuboids. The total surface area of these cuboids is 72 square decimeters. How about the volume of this cube?
• 9. The surface area of a cube is 24 square decimeters. Divide it into two identical cuboids. The surface area of each cuboid is______ Square decimeter
• 10. Use three cubes of the same size to make a cuboid. The surface area of the cuboid is 224 square centimeters, and the surface area of each cube is () square centimeters?
• 11. With 50 pieces of the same square wood, pile up a cuboid 2 cm long, 1.5m wide and 1.2m high. What is the average volume of each square wood? How many cubic decimeters?
• 12. A cuboid wood with a square bottom is 5 meters long. Cut it into 4 sections and increase its surface area by 36 square meters. What's the volume of this cuboid wood?
• 13. A cuboid wood with a square bottom is 5 meters long. Cut it into 4 sections and increase its surface area by 36 square meters. What's the volume of this cuboid wood?
• 14. A cuboid is 5m in length and 3M in width. The area of its largest surface is () m, the area of its smallest surface is () m, and the surface area is () M
• 15. The bottom of a 1.5-meter-long cuboid wood is square, and the bottom remains unchanged. After sawing the wood into two cuboids, the surface area increases by 0.18 square decimeter, which is the same as the original one What is the surface area of the wood?
• 16. The bottom of a 2.5-meter-long cuboid wood is square. After sawing the wood into two sections, the surface area increases by 0.18 square meters. The volume of the original wood can be calculated Can we not use the equation? Better not use the equation
• 17. After sawing a 1-meter-long rectangular timber into two sections, its surface area increases by 0.5 square meters. What is the volume of this timber in cubic meters? Urgent~ If you want a picture, I'll send it to you..
• 18. Sawing a 2-meter-long cuboid wood into three sections will increase its surface area by 16 square meters. How many cubic meters is the original volume of this wood?
• 19. A cuboid wood is 5 meters long. After sawing it into two sections, the surface area increases by 40 square decimeters. How many cubic meters is the original volume of this wood
• 20. Divide the 5-meter-long rope into 4 sections, and each section is the length of the rope___ Each paragraph is___ Rice