A cuboid container with a length of 4 decimeters, a width of 3 decimeters and a height of 4.5 decimeters. Fill this container with 30 liters of water. How deep is the container?
Two cars, A and B, leave from Station A and bilibili at the same time and meet in 3.5 hours. When they met, car B was 70 kilometers longer than car A. It is known that the distance that car B travels per hour is 1.5 times that of car A. How many kilometers does car A travel per hour?
Fruit farmers should pack 680 kilograms of apples into cartons and transport them away. Each carton can hold 15 kg. How many cartons do they need?
Two tenths of a barrel of gasoline is poured out, which is exactly 24 kilograms. How much does this barrel of gasoline weigh?
A garment factory produced 4,500 sets of sportswear in February, one tenth less than that in June, when it was 5,438+10. How many sets of sportswear were produced in June+10, 5438?
Mingming's room walls need repainting. This room is 4 meters long, 3 meters wide and 3 meters high. Excluding the door and window area of 4.7 square meters, 0.6 liters of paint is used per square meter, and 4.5 liters of matte paint is used for the external wall of Nippon Mengqiancai, with a price of 286 yuan per barrel. How much does it cost to paint a well-painted room?
There are 49 students in one class, including 24 boys. What percentage of boys are in this class? What percentage of girls are in the class?
A 30-meter-long steel pipe was sawed into three sections. The first section is 7 meters long and 2.5 meters shorter than the second section. How long is the third section?
There is a swimming pool, which is 25m long,12m wide and1.4m deep. Square white tiles 2 meters long are attached to the bottom and edge of the pool. A * * *, how many pieces do you need?
An engineering team built an expressway with a length of 15.8 km. Five kilometers were built in the first week, and the second week was 0.7 kilometers more than the first week. How many kilometers does it take to complete it?
This cuboid reservoir has 2 100 cubic meters of water. This reservoir is 50 meters long and 20 meters wide. How deep is it?
The school brought 7.6 cubic meters of sand and spread it in a bunker 5 meters long and 3.8 meters wide. How thick can it be laid?
A water conservancy engineering team repairs ditches 125m every day for the first four days and 134m every day for the last three days. How many meters of canals does this engineering team build on average every day?
How long does it take to make 10 cubic iron frame with a side length of 8 cm?
Make an iron box with iron sheet so that its length, width and height are 1.8 decimeter, 1.5 decimeter and 1.2 decimeter respectively. How many square meters does it take to make such an iron box?
How many square meters of glass does it take to make a cubic glass fish tank without a cover? The side length is 3 meters.
Our school is going to paint the classroom, which is 8 meters long, 7 meters wide and 3.5 meters high. After deducting the area of doors, windows and blackboards 13.8m square meters, we can see that each square meter needs 5 yuan painting fee. How much does it cost to paint a classroom?
A commodity box is a cube with a side length of 6 cm. What is the maximum area of a box with a trademark?
The length, width and height of the wooden drawer are 2.8 decimeters, 1.5 decimeters and 2.2 decimeters respectively. How many square meters of wooden drawers does it take to make five such drawers?
There is a fish pond, with a length of 18m, a width of 12m and a depth of 3.5m It is necessary to coat a layer of cement around the fish pond to prevent water seepage. If 5 kilograms of cement is used per square meter, how many kilograms of cement does a * * need?
The processing factory will process a batch of TV sets. (No bottom) Each TV is 60 cm long, 50 cm wide and 55 cm high. How many square meters of cloth does it take to make 1000 sets?
24 rectangular iron chimneys, each 2m long, 4m wide and 3m high. How many square meters of iron do you need?
A rectangular goldfish bowl is 8 cm long, 5 cm wide and 6 cm high. The glass in front of it was accidentally broken. How many square decimeters is the area when the glass is repaired?
The rectangle is 4 decimeters long, 2.5 decimeters wide and 3 decimeters high. How many cubic decimeters is its volume?
A cuboid bunker is 4m long, 2m wide and 0.5m deep. If the yellow sand weighs 1.4 tons per cubic meter, how many tons does it weigh?
There is a rectangular steel with a length of 2 meters and a cross section of a square with a side length of 5 cm. Each cubic decimeter of steel weighs 7.8 kilograms. How much does this square steel weigh?
What is the volume of a cuboid with a base area of 30 square decimeters and a height of 3 meters?
Writing head 1.3m, 0.6m wide and 0.8m high. How much space does 20 such desks need?
A 5-meter-long cube fish tank is filled with water. Pour water into a cuboid fish tank with a bottom area of 48 square decimeters and a height of 6 decimeters. How deep is the water in the fish tank?
A cubic tank with a side length of 8 decimeters can hold 490 liters of water. Pour water into a rectangular water tank with a length of 10 decimeter, a width of 7 decimeters and a height of 8 decimeters. What is the depth of the water tank?
Forging a cubic billet with a side length of 8 cm into a rectangular steel plate with a length of 16 cm and a width of 5 cm, how thick is this steel plate? (excluding losses)
A cuboid oil drum with a bottom area of 18 square decimeter can hold 43.2 kilograms of oil. If each liter of oil weighs 0.8 kg, what is the height of oil in the oil drum?
The rectangular iron sheet is 30 cm long and 25 cm wide. Cut a square with a length of 5cm from each of the four corners to make a box without a lid. How much iron is used in this box? What is its volume?
Cut a rectangular wooden board with a length of 26dm, and cut squares with a length of 3 m at four corners to make a cuboid container with a volume of 840 cubic decimeters. What is the original width of this board?
A rectangular swimming pool is 60 meters long, 30 meters wide and 2 meters deep. How many square meters is this swimming pool? Draw the water level line with red paint along the inner wall of the swimming pool at 1.5 meters. How long is this line? Now the water in the swimming pool just reaches the water level. What's the volume of water in the pool?
A rectangular glass jar, measured from the inside, 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. What is the volume of the stone?
80 square squares are piled into a cuboid with a length of 2m, a width of 2m and a height of1.5m. What is the average volume of each square square? How many cubic decimeters?
Three cubes with a length of 8 cm are combined into a cuboid. What is its volume and surface area?
The furniture factory ordered 500 squares, each with a cross-sectional area of 25 square decimeters and a length of 3.8 meters. What is the volume of these logs?
Put two cubes with side length of 1.5 decimeter into a cuboid. What is the volume and surface area of this cuboid?
A cuboid has a surface area of 156 square decimeter, a bottom area of 30 square decimeter and a bottom circumference of 32 decimeter. What is the volume of this cuboid?
How many cuboid blocks with a length of 8cm, a width of 12cm and a height of 5cm can be sawed into cubes with a length of 2cm?
A rectangular piece of wood with a square bottom is 5 meters long. Cut into 4 sections to increase the surface area by 36 square meters. Find the cuboid volume?
There are 23 boys and 25 girls in Grade Five. What is the percentage of girls to boys? What is the percentage of boys and girls in this class?
Divide 3 tons of rice into 5 parts on average. How many tons per serving? How much is the rice per serving?
There are 280 comic books and 140 literature books in the school library. How many comic books are there? Which part of a comic book is a literature book?
There are 24 students in Class 3, Grade 5, Shengli Primary School, and 24 students are unqualified 12. What percentage of students meet the standard in the class?
Master Wang processes 34 parts in 6 hours, and Li Shifu processes 40 parts in 7 hours. Who is more efficient?
A book has 185 pages. After reading 95 pages, what percentage of this book have you read? What percentage of unread pages are in this book?
A cuboid reservoir is 8 meters long, 5 meters wide and 3 meters deep. What is the area of this reservoir? How many cubic meters of water can it hold at most?
Xiaoming's father made a cube fish tank with a length of 6dm out of glass. How many square meters of glass does it take to make this fish tank? Xiaoming injected 144L water into the fish tank. What is the height of the water?