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A rectangular container with a prism 8 cm in length was filled with water, which was poured into a rectangular container 16 cm long,8 cm wide and 7 cm high. How many centimeters is the water surface from the cuboid container?
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In a rectangular container, measure that length of the prism from the inside by 2 decimetre, pouring 5 decimetre of water into the container, and placing a rectangular iron a height of 8 cm in the water, When the iron block is completely submerged in the water, the water depth is 15 cm. Find the bottom area of the iron block.
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- 1. A square prism is 2 decimeter long, pour 5 decimeters of water, and then put 8 centimeters of rectangular iron block in the water. At this time, the water depth is 15 centimeters, and the bottom area of iron block is determined. A square prism is 2 decimeter long, pour 5 decimeters of water, and then put 8 centimeters of rectangular iron block in the water. At this time, the water depth is 15 centimeters, so as to find the area of iron block bottom.
- 2. When a cuboid of 100 decimetres is cut off from a cuboid, the remaining part is exactly a 5 minute square with the original cuboid What is the square decimeter of the surface area of (continued ↑)
- 3. The sum of the edges of a cuboid is equal to that of a cube. The cuboid is known to be 8 cm long and 5 cm wide, and its volume is cubic
- 4. The vertical height difference between the inner and outer mercury surfaces of the glass tube is 700mm, and the local atmospheric pressure is () mm mercury column
- 5. Mr. li was doing a torrecelli experiment to study atmospheric pressure when the glass tube was so thin that it closed off a portion of the air when the mercury was poured. If the mercury column is only 20 cm high, the following statement is true: A. When the glass tube is placed vertically upward, the air pressure enclosed in the tube is equal to the pressure outside B. When the glass tube is placed horizontally, the air pressure enclosed in the tube is equal to the pressure outside C. When the glass nozzle is placed vertically downward (the watermark is not poured out), the air pressure enclosed in the pipe is equal to the atmospheric pressure outside D. Regardless of placement, the closed air pressure inside the tube is equal to the atmospheric pressure outside Please elaborate on why, which is right and why others are wrong Be sure to analyze them one by one
- 6. A rectangular glass container with a bottom surface of 30 cm by 30 cm is filled with water, and a portion of the water is poured into an iron drum with a bottom surface of 10 cm high When the iron drum is filled with water, the water level in the container drops by 20cm. What is the side length of the bottom surface of the iron drum? Write wrong, is to pour part of the water into a square bottom, after the same A rectangular glass container with a bottom surface of 30 cm by 30 cm is filled with water, and a portion of the water is poured into an iron drum with a bottom surface of 10 cm high When the drum is filled with water, the water level in the container drops by 20cm. What is the side length of the bottom of the drum? Write wrong, is to pour part of the water into a square bottom, after the same
- 7. A 30 cm×30 cm rectangular glass container was filled with water. Now, a portion of the water was poured into an iron bucket with a square bottom and a height of 10 cm. When the iron bucket was filled with water, the water in the container dropped by 20 cm. How long was the bottom of the iron bucket? A 30cm×30cm rectangular glass container is filled with water. Now, pour some water into an iron bucket with a square bottom and a height of 10cm. When the iron bucket is filled with water, the water surface in the container drops by 20cm. What is the side length of the bottom of the iron bucket? A 30cm×30cm rectangular glass container is filled with water. Now, pour some water into an iron drum with a square bottom and a height of 10cm. When the iron drum is filled with water, the water surface in the container drops by 20cm. What is the length of the bottom side of the iron drum?
- 8. A 30 cm×30 cm rectangular glass container was filled with water. Now, a portion of the water was poured into an iron bucket with a square bottom and a height of 10 cm. When the iron bucket was filled with water, the water in the container dropped by 20 cm. How long was the bottom of the iron bucket? A 30cm×30cm rectangular glass container is filled with water. Now, pour some water into an iron bucket with a square bottom and a height of 10cm. When the iron bucket is filled with water, the water surface in the container drops by 20cm. What is the side length of the bottom of the iron bucket? A 30cm×30cm rectangular glass container is filled with water. Now, pour some water into an iron drum with a square bottom and a height of 10cm. When the iron drum is filled with water, the water surface in the container drops by 20cm. What is the length of the bottom side of the iron drum?
- 9. A 30 cm×30 cm rectangular glass container was filled with water. Now, a portion of the water was poured into an iron bucket with a square bottom and a height of 10 cm. When the iron bucket was filled with water, the water in the container dropped by 20 cm. How long was the bottom of the iron bucket? A 30cm×30cm rectangular glass container is filled with water. Now, pour some water into an iron bucket with a square bottom and a height of 10cm. When the iron bucket is filled with water, the water surface in the container drops by 20cm. What is the side length of the bottom of the iron bucket? A 30cm×30cm rectangular glass container is filled with water. Now, pour some water into an iron drum with a square bottom and a height of 10cm. When the iron drum is filled with water, the water surface in the container drops by 20cm. What is the length of the bottom side of the iron drum?
- 10. A 30 cm×30 cm rectangular glass container was filled with water. Now, a portion of the water was poured into an iron bucket with a square bottom and a height of 10 cm. When the iron bucket was filled with water, the water in the container dropped by 20 cm. How long was the bottom of the iron bucket? A 30cm×30cm rectangular glass container is filled with water. Now, pour some water into an iron bucket with a square bottom and a height of 10cm. When the iron bucket is filled with water, the water surface in the container drops by 20cm. What is the side length of the bottom of the iron bucket? A 30cm×30cm rectangular glass container is filled with water. Now, pour some water into an iron drum with a square bottom and a height of 10cm. When the iron drum is filled with water, the water surface in the container drops by 20cm. What is the length of the bottom side of the iron drum?
- 11. When two cubes with 3 dm edges are combined into a cuboid, the surface area is () and the volume is () When two squares of 3 dm in length are combined into a box, its surface area is () and its volume is ()
- 12. The sum of the edges of a cuboid is 48 dm, the cuboid is known to be 8 dm long and 3 dm wide. The sum of the edges of a cuboid is 48 dm, and the cuboid is known to be 8 dm long and 3 dm wide.
- 13. When the height of a rectangle is increased by 3 dm, it becomes a cube. The surface area of this cube is increased by 48 dm2 compared with that of the original cube. Formula ~
- 14. A cuboid wood (as shown in the figure), after cutting a cuboid with a volume of 72 decimeters, the remaining part is exactly a cuboid with a prism length of 3 decimeters. Find the surface area of the original cuboid.
- 15. By reducing the height of the cuboid by 4 decimetres, it becomes a cuboid and its surface area is reduced by 80 square metres. The cuboid was originally () cubic metres
- 16. A cuboid is cut into two identical cubes, increasing the surface area by 18 cm2, which is () cm2
- 17. A cuboid has a surface area of 360 square centimeters and can be cut into two identical cubes. The volume of each cube is ______ cubic centimeters.
- 18. A cuboid has a surface area of 360 square centimeters and can be cut into two identical cubes. The volume of each cube is ______ cubic centimeters.
- 19. A cube has a surface area of 360 square centimeters. Cut it into two identical cubes. What is the surface area of each cuboid?
- 20. A cuboid with a surface area of 360 square centimeters could be cut into two identical cuboids. How many cubic centimeters was each cuboid? A cuboid with a surface area of 360 cm2 can be cut into exactly two identical cubes. What is the volume of each small cube? A cuboid with a surface area of 360 square centimeters can be cut into exactly two identical cubes. What is the volume of each small cube?