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A cuboid glass tank, measured from the inside, has a square with a circumference of 6 decimeters at the bottom. Now, 9 liters of water is injected into the tank. How high is the water in the tank?
9 liters = 9 cubic decimeters
Bottom side length = 6 / 4 = 1.5 decimeters
Water height = 9 / (1.5 × 1.5) = 4 decimeters
There is a cuboid glass, 100cm in length and 50cm in width. If you want to use it to make a fish tank, 40cm in length, 30cm in width and 25cm in height, is this glass enough,
How to draw lines, if not enough, please explain the reason. (each side is a whole piece of glass, first write the size of each piece, then draw lines)
emergency
Key picture
It's 40 * 30, 40 * 25, two, 30 * 25
First, mark 40 * 25, 30 * 25, the rest is a 50 * 30, and then mark 50 * 10
A cuboid glass jar, measuring 40cm in length and 25cm in width from the inside, has a water depth of 12cm. After soaking a stone in water, the water surface rises
How about 4cm, the volume of the stone?
The volume of rising water is the volume of stone, 40 * 25 * 4 = 4000 cubic centimeter
A rectangular glass fiber reinforced plastic, measuring 40cm in length and 25cm in width from the inside, and 12cm in water depth in the tank
What is the volume of the stone
What's the cubic meter
A rectangular glass fiber reinforced plastic, measuring 40cm in length and 25cm in width from the inside, and 12cm in water depth in the tank
So the added volume is the volume of the stone
The added volume is 40 * 25 * (16-12) = 40 * 25 * 4 = 4000 cubic centimeter = 0.004 cubic meter
RELATED INFORMATIONS
- 1. A cuboid glass jar is 40 cm long, 25 cm wide and 12 cm deep. After a stone is immersed in water, the water surface rises to 16 cm and the volume of the stone is calculated
- 2. There is a kind of uncovered fish tank, which is 30cm long, 20cm wide and 40cm high. When a fish is put in such a tank, the water surface rises from 18cm to 25cm. What is the volume of the fish?
- 3. The surface area of a cuboid is 386cm3, the bottom area is 40cm3, and the perimeter is 36cm?
- 4. The height of a wooden box is 5 decimeters, the perimeter of the bottom surface is 3 meters, the area of the bottom is 54 square decimeters, and its surface area is [] square decimeters, Just fill in the blanks The circumference of the upper and lower sides of a cuboid is 48 cm. If the height of the cuboid is 20 cm, then the total length of its edges is [] cm, and the maximum volume of the cuboid is [] cubic cm If the length of a cuboid is increased by 5 cm, the surface area will be increased by 80 square cm. The original surface area of the cuboid is [] fast Time limit OK, absolutely
- 5. Use 2 cm thick wooden board to make a wooden box without cover, which is 100 cm long, 65 cm wide and 85 cm high. Calculate the volume of the wooden box. (accurate to cubic decimeter)
- 6. The height of the cuboid wooden box is 8 decimeters, the length is 5 decimeters more than the width, and the volume is 528 cubic decimeters
- 7. A circle with a radius of 2.5cm is equal to the perimeter of a rectangle. It is known that the length of the rectangle is 4.5cm. What is the area of the rectangle?
- 8. Find the perimeter and area of the following figure: below is a rectangle, 8dm long and 5DM wide. Above is a semicircle
- 9. The lengths of three sides of a right triangle are 12cm, 16cm and 20cm respectively. How many centimeters is the height of the hypotenuse of the right triangle? The solution of the equation
- 10. After the side length of a square is reduced by 3 cm, the area will be reduced by 51 square cm. Find the original square area
- 11. A cuboid glass fish tank (with cover) is 50cm long, 40cm wide and 35cm high. How much is the water depth of 40 liters in this fish tank?
- 12. A rectangular glass tank, the bottom is a square with a circumference of 56 cm, now pour 9 liters of water into the tank, what is the height of the water in the tank? (integer is reserved for the result)
- 13. In a cylindrical glass jar with a bottom diameter of 12 cm, a height of 20 cm and a water depth of 15 cm, a cone iron block with a bottom diameter of 10 cm is put into the jar, and the water is cooled Rise 2cm, find the height of the cone iron block
- 14. A cube has a base area and perimeter of 9 square decimeters. What is the surface area and volume of the cube
- 15. Place 20 cubes whose edges are 1 cm long into a cuboid whose height is 2 cm. The surface area of the cuboid is () or ()
- 16. Put together a cuboid with five exactly the same cubes. The surface area is reduced by 24 square centimeters. The surface area of this cuboid is______ Square centimeter
- 17. The bottom of a cuboid is a square. After expanding the side of the cuboid, a square with a circumference of 80cm is formed. What is the volume of the square? What does it look like when the side is unfolded Ask for an answer!
- 18. The circumference of a rectangle is 96cm, and the length is 6cm less than twice the width. How many cm are the length and width? Let the length be xcm, and the width be YCM. According to the meaning of the problem, the equations are () Such as the title~
- 19. The perimeter of a rectangle is between 40 cm and 50 cm. If the ratio of its length to width is 5:7, what is the perimeter and area of the rectangle?
- 20. The circumference of a rectangle is 55cm. It is known that its length is 3.5cm longer than its width. How many cm are the length and width of the rectangle?