Primary 6 Problem 20 for calculating volumes

The volume is the base area multiplied by the height, and the cone is one-third of the base area multiplied by the height.

A cuboid cube is long multiplied by width and then multiplied by height.

1.A timber with a square cross-section, long meters, increased the surface area by 16 square meters after sawing it into 3 cuboids. What is the volume of this box?

2.A rectangular iron box with a square bottom surface, if you put it on the side, you can get a square with a side length of 8 decimeters, and find the volume of the iron box.

3.How many different shapes of cuboids can be arranged with 12 cubes with an edge length of 1 cm? Please try to draw a picture. How many cubic centimeters do they have?

1.The radius of a cylindrical tea caddy is about 3 cm, and its side is a square

2 Xiaohong to make a cylindrical pen holder, the bottom radius is 4 cm, the height is 16 cm, at least how many square centimeters of paper wrench is needed?

3.A pill box is decimeter long, decimeter wide, and high decimeter, and the surface area is found.

4.What is the surface area of a box with a TV that is 1 meter long, wide and high?

5. Make cuboid steel, the length and width are 3 meters, the height is 2 meters, what is the volume?

6.What is the volume of a drawer, 18 cm long, 16 cm wide and 9 cm high?

Pour 10 grams of wine into a conical container, the height of which is exactly half of the cone container, the height of the cone is a, how many grams of wine are poured in, just to fill the container?

There is a cuboid, if the width and height are the same, increase the length by 5 centimeters, the volume will increase by 240 cubic centimeters, and the volume of this rectangle is how many cubic centimeters.

How many cubic centimeters does it take to cut a copper cylinder with a bottom diameter of 2 cm and a height of 3 cm into the largest cone?

In elementary school, all volumes are multiplied by the base area by the height, except for the cone, which is multiplied by a third.

The water height at this time is x centimeters.

20×20x+40×30×10=40×30x400x+12000=1200x

800x=12000

x=15A: The water is 15 cm high.

Equation: 40 30 10 = 12000 cubic centimeters 40 30-20 20 = 800 square centimeters.

Water height: 12000 800 = 15 cm.

The details are as follows: according to the volume of water before and after the iron block is unchanged to calculate, the volume of water before it is: 40 30 10 = 12000 after the volume of water is: (40 30-20 20) x = 800x where the brackets are the bottom area of the water now, x is the height of the water, and then use 12000 800 = 15, then 15cm should be the current water height What does the owner think?

In fact, a very important sentence in this question is: the iron is exposed to the water, which is a hint. If you don't have this prompt, you have to think about it in many ways.

Calculate the volume of the graph below

= cubic centimeters).

= cubic centimeters).

Send it over and take a look.

The volume of the cube v=40 40 40=64000Because the volume of the cube is the same when forging the cube, the height of the cuboid is h, and the volume of the cuboid v=20 20 h=64000 h=160

That is, the steel forged is 160 cm long.

The volume formula for a cube: cube volume = side length 3

The volume of the cube: 40*40*40=64000cm 3The volume of the cube = the volume of the cuboid:

Box formula; Area = Bottom * Height;

64000/20/20=16cm;

When the cube becomes a cuboid, the volume remains the same.

Cube: 40x40x40=64000

The length of the cuboid: 64,000 divided by 20 and divided by 20 = 160 cm.

Rectangle volume = square volume.

Find the volume of the cube by dividing the height and width of the cuboid.

40 times 40 times 40) divided by 20 divided by 20

Do you understand? Think about it.

Cube volume: 40 40 40 = 64000 cubic centimeters.

Box length: 64000

20 20) = 160 cm.

v cube = 40x40x40 = 64000 (cubic centimeters).

v cuboid = length x width x height = v cube = 64000 (cubic centimeters).

When the width and height are both 20 cm, the length is 160 cm.

This question examines the formula for calculating cubes and cuboids Cube volume = cube of side length Box volume = length x width x height Because the problem does not remember the loss, so the volume of steel in the cube = the volume of steel in the cuboid Understand these I must be able to solve it, right?

Cube: 40x40x40=64000

The length of the cuboid: 64,000 divided by 20 and divided by 20 = 160 cm.

First calculate the volume of the square: 40*40*40=64000cm 3

The length of the rectangle: 64000 (20*20)=160cm

Cube volume = 40 * 40 * 40

Box volume = cube volume.

Cuboid length = 40 * 40 * 40 20 20 = 160 cubic centimeters.

The volume does not change when forging, because the volume of steel is 40x40x40 = 64000 cubic centimeters, and the volume of the cuboid is length x width x height, so length = volume divided by width divided by height = (64000 20) 20 = 160 cm.

Steel volume = 64000 cubic centimeters, length = 64000 400 (centimeters) = 160 centimeters.

Let the original radius be x and the height be h, then the circumference of the original bottom surface is 2*, and the original volume is.

Then set the original volume to v

The circumference of the base surface is enlarged by a factor of two, that is, the radius becomes 2x, and according to the title, the new volume after enlargement is (7(

7v = 35v = 5, that is, the original volume is 5 cubic centimeters.

Hello! Solution: When the circumference of the bottom surface is expanded by 2 times, it means that the radius becomes 2 times the original When the radius becomes 2 times the original, the bottom area becomes 4 times the original When the bottom area becomes 4 times the original and the height becomes 2 times the original volume, then the current volume is 8 times the original volume.

This is the subject of a difference problem.

Then we can know that the original volume is: 35 (8-1)=5 (cubic meters) only represents a personal opinion, don't spray if you don't like it, thank you.

(20+10) multiply by 25 divided by 2 and multiplied by 35

30 times 25 divided by 2 and then multiplied by 35

750 divided by 2 and multiplied by 35

375 times 35

13125 cubic centimeters.

Assemble a box with the smallest surface area.

Ask? What is the area of this box?

6 4 (2+2+2) = 144 cubic centimeters.

The box with the largest surface area? What is the area.

232 square centimeters.

1.Xiao Ming wants to pour a carton of 250ml of milk into a cylindrical cup with a bottom radius of 3cm and a height of 6cm. (Thickness not counted).

Solution: 250ml = 250 cubic centimeters.

3*3*cubic centimeters) <250

A: Yes.

2.If Red wants to paint each face of a cube with an edge length of 5cm, how much area does she want to put on it?

Solution: 5*5*6=150 (square centimeters).

3.The milk produced by a company is less marked with "net content 250ml", and the milk carton is 7cm long, 6cm wide and 5cm high.

Solution: 7*6*5=210 (square centimeters) = 210ml 210<250 Answer: No, because this box can only hold 210ml of milk, so it doesn't match.

To the landlord: I've thought about it for a long time, choose me!

Reference: None. o( o haha

Solution: Bottom area of the fish tank:

Volume of water: area of water pipe: (4 2) square.

Irrigation for about = 4 minutes.

Good luck with your progress.

Length, width, height = length 120 cm, width 40 cm, height 60 cm to be injected into deep water = to be injected into 50 cm deep water.

First calculate the cross-sectional area of the pipe, then calculate the amount of water to be injected per second, and then calculate the volume of water that needs to be filled divided by the amount of water per second.

The unit goes to convert it itself.

Deep water, with a volume of.

Flow rate per minute = water pipe cross-sectional area * 50m = pi * (4 2) 2 * 50 10 4 =

Time minutes.

4cm=, the volume of water to be injected is cubic meters, and the volume of water that can be injected into the water pipe per minute is approximately equal to cubic meters, minutes.