2. The canteen should be made of a glass counter with a length of 2.2m, a width of 40cm and a height of 80cm. Now, angle iron should be installed around the counter. How many meters of angle iron does this counter need?
3. Guanghua Street has installed a new tin mailbox, which is 50 cm long, 40 cm wide and 78 cm high. How many square centimeters of iron does it take to make this mailbox?
4. Squadron members stick red paper on all sides of a 46 cm square carton to make a "love box". How many square centimeters of red paper do they need at least?
5. A cuboid biscuit box with a length of 10cm, a width of 6cm and a height of 12cm. If a circle of trademark paper is attached around (not up and down), what is the area of this trademark paper at least?
6. The processing factory should process a batch of washing machine units (bottomless). The length, width and height of each washing machine are 59.5cm, 42.5cm and 80cm respectively. How many square meters of cloth does it take to make 1000 units?
7. A new swimming pool is built in the fitness center, which is 50 meters long, twice as wide and 2.5m meters deep. Now it needs to be tiled around and at the bottom of the swimming pool. How many square meters of tiles do you need to paste?
8. Schools should paint new classrooms. It is known that the classroom is 8m long, 6m wide and 3m high, and the area excluding doors and windows is11.4m2. If 4 yuan paints every square meter, how much will it cost to paint this classroom?
9. The podium is composed of three cuboids, with yellow paint on the front and back, and red paint on other exposed surfaces. What is the area of yellow paint and red paint?
1 1. How many cubic pits will be dug in the construction site?
12. What is the volume of an ice cube 30 cm long?
13. The birthday cake made by my mother for my grandmother is 2 dm long, 2 dm wide and 0.6 dm high. My grandmother divided it into four rectangular cupcakes on average. How to divide it? How big is everyone's share?
14. The furniture factory ordered 500 square logs, each with a cross-sectional area of 24 square meters and a length of 3 meters ... How many cubic meters are these logs?
15. On Children's Day, the city's primary school students erected an Olympic wishing wall with a length of 6m, a height of 2.7m and a thickness of 6cm in the center of the square. How many bricks are used in this wall?
16. There are 50 newly installed rest stools in the Garden Community, the length, width and height are 104cm, 44cm and 4.6cm respectively. The length, width and height of the stool legs are 44cm, 4.6cm and 35cm respectively. How many cubic meters of concrete are used in these stools? Use a calculator to calculate. )
17. A fence with a length of 15m, a thickness of 24cm and a height of 3m should be built in the south of the park. If 525 bricks are used per cubic meter, how many bricks are used in this fence?
18. The sum of the side lengths of a cuboid and a cube is equal. Given that the length, width and height of a cuboid are 6dm, 5dm and 4dm respectively, what is the side length of a cube? Are they equal in volume?
19. The mail car has a cuboid carriage. Measured from the inside, it is 3 meters long, 2.5 meters wide and 2 meters high. How many cubic meters is its volume?
20. A cuboid freezer, measured from the inside, is 87.5 cm long, 50 cm wide and 56 cm deep. What is its volume?
2 1. A large barrel of mineral water 18L and a small bottle of mineral water 1500ml. How many bottles of mineral water are equivalent to a large barrel of mineral water?
22. Fill a rectangular glass container with a length and width of 2dm with 5L of water, and then put a potato into the water. At this time, the measured water depth in the container is 13cm. What is the volume of this potato?
23. A knapsack sprayer, the volume of liquid medicine tank is 14L. If 700ml of medicine is sprayed every minute, how many minutes does it take to finish spraying a box of medicine?
24. A microwave oven, the product manual indicates that the internal dimension of the oven cavity is 400×225×300 (unit: mm). What is the volume of this microwave oven?
25. The ice used in Harbin Ice and Snow World can be melted into about 80,000 cubic meters of water every year. How many swimming pools are 50m long, 25m wide and 1.2m deep?
26. The adobe house for drying raisins in Turpan, Xinjiang has a building area of 18.6 m2 and a height of 2.1m. What is its volume?
27. A train car, measured from the inside, is 13 m long, 2.7 m wide and 1.5 m high, with an average coal weight per cubic meter1.33t.. How many tons of coal is there in this train car?
28. In order to solve the problem of freshwater shortage on the island, an island soldier and local residents * * * built a freshwater reservoir with a length of 22 m, a width of 1m and a depth of1.8 m. How many cubic meters can this reservoir hold at most?
29. The length of table tennis is 2740m, the width is1525m and the thickness is 25m. Its surface is painted. How many square meters is the painting area?
30. A rectangular fish pond is 8 meters long, 4.5 meters wide and 2 meters deep. What is the volume of this fish pond?
3 1. The newly-built basketball stadium should be paved with a 3 cm thick wooden floor. It is known that the stadium is 36 m long and 20 m wide. How many cubic meters of wood should be used to lay it?
Not enough to ask