1. Find the surface area and volume of a cuboid with a length of 7 decimeters, a width of 2 decimeters and a height of 2 decimeters.

2. Find the surface area and volume of a cube with a length of 5 decimeters.

3. How many square decimeters of glass do you need to make a rectangular fish tank with a length of 8 decimeters, a width of 3 decimeters and a height of 5 decimeters?

4. Forging a cubic blank with a side length of 8 cm, a width of 5 cm and a length of 16 cm.

A rectangular steel plate with a length of one centimeter. How thick is this steel plate? (excluding losses)

5. A cuboid oil drum with a length of 8 decimeters, a width of 2 decimeters and a height of 6 decimeters. If the weight per liter of oil is 0.72,

Kilogram, how many kilograms of engine oil can you hold?

General Training in Computing —— Application (2)

1. How many square decimeters of iron does it take to process a cuboid tin oil drum with a length of 2.5 decimeters, a width of 1.6 decimeters and a height of 3 decimeters?

2. The school should dig a rectangular bunker with a length of 4 decimeters, a width of 2 decimeters and a depth of 0.4.

Rice, how many cubic decimeters of yellow sand do you need to fill it?

3. It is known that a cube with a side length of 5 decimeters weighs 0.4 kilograms per cubic decimeter. How much does this building block weigh?

4. Every bottle of cod liver oil drops 10 ml, and now there is 0.4 liter of cod liver oil. How many bottles can you hold?

A brick is 24cm long, half wide and 6cm thick. What is its volume? What is the surface area?

General Training in Computing —— Application (3)

1.3 cubes with a side length of 8 cm are combined into a cuboid. What is the surface area?

2. Tile a rectangular reservoir with a length of 20m, a width of 8m, a depth of 1.5m and a side length of 0.2.

Square meters, how many tiles do you need after pasting?

3. Use a car with a rectangular trunk to transport coal, with a length of 3 meters, a width of 2.5 meters and a coal loading height of 0.4.

Meters, coal weight per cubic meter 1.4 tons. How many tons of coal are transported by five identical cars?

4. Fifty math books are arranged into a cuboid with a length of 18cm, a width of 13cm and a height of 25cm. What is the average volume of each book?

5. How many square decimeters does a carpenter use to make a 5-decimeter-long cubic wooden box without cover?

Computer General Training-Application (4)

1. A water tank can hold 120 liters of water. We say that the () of this water tank is 120 liter.

2.300 cm = () decimeter 45000 cubic decimeter = () cubic meter

3.9 liters = () cubic decimeter = () cubic centimeter

The cross section of a cuboid is a square with a side length of 3 cm and a length of 5.

Cm, the surface area of this cuboid is () square centimeter, and the volume is () cubic centimeter.

The sum of the sides of a cube is12cm, its surface area is () cm2, and its volume is () cm3.

6. The side length of a cube is 3.

Cm, two such cubes are used to make a cuboid. The surface area of this cuboid is () cm 2 and the volume is () cm 3.

7. The processing factory wants to produce a batch of cuboid recorders. It is now measured to be 60 cm long, 20 cm wide and 15 high.

Cm, how many square meters of cloth does it take to make 2500 such recorders? (No bottom)

8. Forging a cubic iron block with a side length of 10 cm into a width of 5 cm and a height of 10.

What is the length of a one-centimeter-long cuboid iron bar?