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In a 6-decimeter-long, 4-decimeter-wide and 3-decimeter-high rectangular glass jar, the water depth is 2 decimeters, The water depth becomes 2. Find the volume of the iron ball
6 * 4 * (2.5-2) = 12 square decimeters
The volume of the iron ball is 12 square decimeters
A sealed glass jar with a length of 10m, a width of 8cm and a height of 6cm is filled with 240ml water, which is placed on the table with different surfaces as the bottom. What is the minimum height of water and what is the maximum height of water
240/(10*8) = 3cm
240/(10*6) = 4cm
240/(6*8) = 5 cm
The minimum height is 3cm and the maximum height is 5cm
A sealed cuboid glass jar with a small amount of water is 10 cm long, 6 cm wide and 5 cm high
Among them, the lowest height of the water surface is 2 cm, and how many cm is the highest height of the water surface?
The minimum height of the water surface is 2 cm and the maximum height is 5 cm
Use a 20 cm long and 15 cm wide rectangular sheet iron to make a 5 cm high rectangular sheet iron box without cover
How much is the volume? It's best to use the equation solution, otherwise use other methods
x=(20-5×2)×(15－5×2)×5
x＝10×5×5
X = 250 cm3
Set the table and chair in the following way: one table can seat 4 people, two tables can seat 6 people, and how many people can n tables seat?
Our teacher talked about 2n + 2 in class
The exact answer
Vote for me
3 / 10 square meters = () square decimeters (in fractions)
3 / 10 sq m = (300 / 10 sq m)
There are 120 books in the book corner of the class, of which 60 are story books, 20 are comic books, and the rest are science and technology books. (1) 120 × 60%______ （2）120×20%______ （3）120×（1-60%-20%）______ （4）60%÷20%______ （5）（60%-20%）÷60%______ （6）（60%-20%）÷20%______ ．
(1) How many 120 × 60% story books are there; (2) how many 120 × 20% comic books are there; (3) how many 120 × (1-60% - 20%) science and technology books are there; (4) what percentage of 60% – 20% story books are there; (5) how many percentage of 60% – 20% comic books are less than those of story books; (6) how many percentage of 60% – 20% story books are more than those of story books
2/(1*3)+｜1/2-1/4｜+2/(3*5)+｜1/4-1/6｜+2/(5*7)+｜1/6-1/8｜.2/(27*29)+｜1/28-1/30｜=?
2/(1*3)+｜1/2-1/4｜+2/(3*5)+｜1/4-1/6｜+2/(5*7)+｜1/6-1/8｜.2/(27*29)+｜1/28-1/30｜=（1-1/3+1/3-1/5+1/5-1/7+…… +1/27-1/29）+（1/2-1/4+1/4-1/6+1/6-1/8+…… +1/28-1/30）=（1-1/29）+（1/2-1/30）=28/29+7/...
What is the measurement unit of liquid volume
Ml or L
Primary school sixth grade Chinese birch
Betula platyphylla
In front of my window,
There is a birch,
It's like silver frost,
Covered with snow
Hairy branches,
The lace of snow embroidery is natural and unrestrained,
Clusters of flowers bloom together,
The white fringe is picturesque
In the dim silence,
The white birch stands on the jade,
In the golden light
Snowflakes are shining brightly
Birches roam around
The late morning glow,
It looks at the snowy branches
Another layer of silver luster
It's hard to fight,
RELATED INFORMATIONS
- 1. There is water in a sealed rectangular glass fiber reinforced plastic. The lengths of the three edges intersecting one vertex of the glass jar are 10 cm, 6 cm and 5 cm respectively. Put the glass jar on the water surface in three different ways. The minimum height of water is 2 cm. What is the maximum height of water? (please draw a sketch and calculate it.)
- 2. Pour 18 liters of water into a rectangular glass tank 4 decimeters long, 3 decimeters wide and 2 decimeters high. How many decimeters is the distance between the water surface and the tank mouth?
- 3. A cuboid glass jar is 4 decimeters long, 3 decimeters wide and 5 decimeters high. After pouring water, the water depth is 3.5 decimeters, and the poured water is () liters A. 60B. 42C. 52.5
- 4. A rectangle shaped plexiglass is 10 cm long, 8 cm wide and 6 cm high. Cut the largest cube on the plexiglass and find the rest
- 5. Cut a cube with an edge length of 8 cm into two cuboids of the same shape and size. The volume () and surface area () of each cuboid
- 6. Cut a cuboid 16 cm long, 8 cm wide and 10 cm high into two cuboids of exactly the same shape and size. What is the maximum and minimum surface area of the cuboid?
- 7. A rectangular food box is 8 cm long, 6 cm wide and 10 cm high. If a circle of brand paper is pasted around the food box, how many square meters is the area of the brand paper at least?
- 8. A cuboid food box is 10 cm long, 8 cm wide and 12 cm high. Stick a circle of brand paper around it. How many square centimeters should the area of brand paper be at least?
- 9. In a cylindrical bottle with a bottom radius of 10 cm, the water depth is 8 cm. To put a piece of iron in the bottle, which is 8 cm in length and 15 cm in width and 15 cm in height, how many cm does the water surface rise when the iron is placed vertically in the water?
- 10. In a cylindrical bottle with a bottom radius of 10 cm, the water depth is 8 cm. To put a piece of iron in the bottle, which is 8 cm in length and 15 cm in width and 15 cm in height, how many cm does the water surface rise when the iron is placed vertically in the water?
- 11. A 40 cm long, 20 cm wide and 30 cm high cuboid glass jar is 18 cm deep. Now an iron ball is completely immersed in the water, and the water surface rises to 25%
- 12. As shown in Figure 1, the water depth in a closed rectangular glass tank is 3 cm. If the glass tank is placed as shown in Figure 2, how many cm is the water depth inside?
- 13. When a rectangular iron block with a bottom area of 4 square centimeter is put into a glass container with a bottom area of 20 square centimeter, the water in the container rises by 1 centimeter Ask for the height of the iron
- 14. A cuboid shaped glass container, 40 cm long, 30 cm wide and 50 cm high, is waterproof and 3 decimeters high. Now there is a piece of iron in it, which is completely immersed in water, and the water level is 35 cm high. How many kg of iron is put in it (7.8 kg of iron per cubic decimeter)
- 15. A cuboid glass jar is 40cm in length, 20cm in width and 30cm in height. The water depth is 18cm. Now, an iron ball is completely immersed in the water, and the water surface rises to 25cm to calculate the volume of the iron ball
- 16. A sealed cuboid glass can, 30cm long, 18cm wide and 12cm high. When it is square, the water depth inside is 9cm. When it is placed on the side, what is the water depth?
- 17. A cuboid glass container with a bottom area of 96 square centimeters and a height of 10 centimeters contains 5 centimeters of water. Now, an iron bead is completely immersed in water In the above, the water level rises by 2 cm. What's the volume of this iron bead? At least a few of these iron beads must be placed before the water overflows the glass container?
- 18. A cylindrical container a with a height of 8 cm and a volume of 50 ml is filled with water. Now put a 16 cm long cylinder B vertically so that the bottom of B is in line with a When B is picked up from a, the height of water in a is 6cm, and the volume of cylinder B is calculated
- 19. A rectangular tank 30 cm long and 22 cm wide has a water depth of 12 cm. After a stone is placed, the water depth is 19 cm. What is the volume of the stone?
- 20. A 20 cm long, 15 cm wide and 12 cm deep rectangular water tank has a water depth of 6 cm. After a cube stone is put in, the water depth is 10 cm. What is the volume of the stone?