After sawing a cube whose edge length is 1 decimeter into two cuboids, its surface area increases () square decimeter

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• 1. Divide a cube with a surface area of 30 square centimeter into two cuboids, and then put the two cuboids together into a large cuboid to find the surface of the large cuboid
• 2. Cut a cube with a surface area of 1.8 square meters into three cuboids of the same size (regardless of loss). What is the surface area of each cuboid?
• 3. When the height of a cuboid wood block is reduced by 3 cm, it becomes a cube, and the surface area is reduced by 120 square cm. What is the original surface area of the cuboid
• 4. The length, width and height of a cuboid are 20m, 15m and 10m respectively. If the height is increased by 5m, the cuboid volume will be increased by () cubic meters The surface area increased by () square meters
• 5. After cutting off a cuboid with a volume of 80 cubic meters from one end of a cuboid, there is just a cuboid with an edge length of 10 meters, which is the original cuboid volume What is the surface area? Learning needs
• 6. A rectangular glass container is one meter long, 0.5 meters wide and 2 meters deep. Now the water depth is 0.6 meters. When a square iron block with an edge length of 2 decimeters is placed in the water What's the depth of water in the middle and back?
• 7. The edge of a cube glass container is 2 decimeters long, and the water depth in the container is 12 cm What's the volume of stone in cubic centimeter?
• 8. A cuboid glass container is 8 decimeters long, 6 decimeters wide, 5 decimeters high and 4 decimeters deep. If you put a cube with an edge length of 4 decimeters Solid iron, how much water will overflow from the container?
• 9. In a 50 cm long and 40 cm wide cuboid glass jar, put a 10 cm long square iron block into it, and the water depth is 20.5 cm?
• 10. In a cuboid glass jar with a length of 20cm, a width of 10cm and a water depth of 20cm, a square iron block with a length of 5cm is placed. How much has the water surface risen
• 11. Two identical cuboids just form a cube. The surface area of the cube is 30 square centimeters. If the two cuboids are put together into a big cube, the surface area of the cube is 30 square centimeters Cuboid, so the surface area of a large cuboid is [] square centimeter?
• 12. The circumference of the bottom surface of a cylinder is 12.56 meters and the height is 6 meters. Its side area is______ Square meters, the surface area is______ Square meters, the volume is______ Cubic meter
• 13. Cut a cube with an edge length of 6cm into two cuboids of the same size and shape. What is the surface area of each cuboid?
• 14. The surface area of the cuboid is 52 square centimeters, the bottom area is 12 square centimeters, and the width is 3 centimeters. What is the cuboid's volume in cubic centimeters?
• 15. Put three identical cubes together to form a cuboid. The surface area of the cuboid is 350 square centimeters. The surface area of each cube is 350 square centimeters______ Square centimeter
• 16. There is a cube and a cuboid to form a new cuboid. The surface area of the new cuboid is increased by 40 square centimeters, and the surface area of the spherical cube is increased by 40 square centimeters? Such as the title
• 17. Put four cubes with the edge length of 1 decimeter together to form a cuboid. The surface area of the cuboid may be______ Square decimeter, maybe______ Square decimeter
• 18. Cut a 1.8-meter-long cuboid wood into two sections. The surface area is increased by 4 square decimeters. What is the volume of the cuboid wood
• 19. The surface area of a 2m long cuboid wood increases by 40dm2 after it is cut into five sections. What is the volume of this wood cubic decimeter?
• 20. A cuboid timber has a cross-sectional area of 0.24m2 and a length of 5m.8. What is the volume of such timber in cubic meters If you want the formula,