A 9 decimeter long cuboid wood is sawn into three cuboids on average. The surface area is increased by 2.4 square decimeters. The volume of this wood is () cubic decimeters A. 3.6B. 5.4C. 7.2D. 10.8

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• 1. Sawing a 1.2-meter-long cuboid into three sections on average, the surface area will increase by 2.4 square decimeters. How many square decimeters is the original wood? World for help!
• 2. Saw the 2.4-meter-long cuboid wood into three sections, the surface area increased by 3.6 square decimeters compared with the original volume
• 3. Divide a cube into two cuboids averagely, and the surface area increases by 32 square centimeters. How many cubic centimeters is the volume of this cube?
• 4. Two cubes with a surface area of 6 square decimeters form a slightly larger cuboid. How many cubic centimeters is its volume?
• 5. How many square centimetres is the surface area and the volume of a cuboid made of three cubes with the edge length of 0.3 decimeter?
• 6. How many square meters does it take to build a cube pool with a length of 3M?
• 7. The six meter square pool covers an area of 36 square meters. Is it right or wrong
• 8. The edge length of a cube pool is 1.5 meters. It covers an area of () m2 and can hold () m3 of water
• 9. It is a cube pool with the edge length of 3.5m. The pool covers an area of () m2 and can hold () l water at most?
• 10. A square pool with 4 meters edge length covers an area of ()
• 11. The wood of a cuboid is 2 meters long. After sawing it into three sections, the surface area increases by 24 square decimeters. What is the volume of the cuboid
• 12. 1: A conical machine parts, the bottom area is 27 square centimeters, 5 meters high. The volume of this part is how many cubic centimeters? 2: A pile of cone-shaped sand, the perimeter of the bottom is 12.56 meters, 5 meters. Each cubic meter of sand weighs 1.6 tons. How many tons of sand does this pile have? (the number is reserved for two decimal places) 3: When a conical metal part is immersed in a cube container with an edge length of 8 cm, the water surface rises by 3 cm without water overflow. What is the volume of the part?
• 13. Saw a 5 meter long cuboid wood into three sections, the surface area increased 160 square centimeters, the volume of this wood is () cubic decimeter It's urgent!
• 14. A cuboid of wood, saw the wood into two sections, the surface area increased by 32 cubic centimeters, the original volume of this wood is how many cubic decimeters
• 15. Cut a 3.5 decimeter cuboid wood into 6 sections on average. The surface area is 125 square centimeter more than the original. Calculate the original volume of this section of wood
• 16. Saw a 6 decimeter long cuboid wood into three sections on average, the surface area increased 196 square centimeters, how many cubic centimeters is the volume of this wood?
• 17. The surface area of a cuboid is 84 square centimeters. Cut it into three equal cubes. The surface area of each cube is () square centimeters
• 18. If the height of a cube increases by 4cm, it becomes a cuboid. The surface area of the cuboid is just 80 square meters more than that of the original cuboid. What is the original volume of the cuboid? Use the formula and write the meaning
• 19. If the height of a cuboid is 40 cm and its cross section is a cube, if the height is increased by 4 cm, the surface area will be increased by 80 square cm, and the original surface area will be calculated
• 20. If the height of a cuboid is increased by 3 cm, it will become a cube, and the surface area will be increased by 84 square cm. What is the volume of the original cuboid