1, the side of the cylindrical drum team is surrounded by aluminum skin, and the upper and lower bottom surfaces are covered by sheepskin. The drum base diameter of the team is 6 decimeters and the height is 2.6 decimeters. How many square decimetres of aluminum skin does it take to make such a team drum? What about sheepskin?
2. Cylindrical oil drum with bottom diameter of 0.6m and height of1m.. How many square meters of iron sheet does it take to make such an oil drum? (Figures shall be kept to two decimal places)
3. How many square meters of iron sheet is needed to make an iron sheet ventilation pipe with a length of 2 meters and a nozzle diameter of 0. 15 meters?
4. Cylindrical lantern with a base diameter of 24 cm and a height of 30 cm. Stick colored paper on the bottom and side of the lantern. How many square centimeters of colored paper do you need at least?
5. How many square decimeters does it take to make an uncovered cylindrical iron drum with a height of 6 decimeters and a bottom radius of 1.8 decimeters? (Number reserved 10 square decimeter)
6. The "doctor's hat" is made of black cardboard, which is square and has a bottom diameter of 30 cm. Below is a bottomless cylinder with a base diameter of 16 cm. How many square decimetres of black cardboard does it take to make 20 such "doctor hats"?
7. The height of a style in the square is 3.5 meters, the radius of the bottom is 0.5 meters, and the side and top of the style are covered with plastic flowers. If there are 42 flowers per square meter, how many flowers are there in this style?
8. The column height is 3m, and the bottom circumference is 3. 14m. Paint five such columns, with 0.5 kg of paint per square meter. How many kilograms of paint does a * * * need?
9. Measured from the inside, the bottom radius of the cylindrical insulated tea barrel is 3 decimeters and the height is 5 decimeters. If the weight of water per cubic meter is 1 kg, can this thermos hold 150 kg of water?
10. Bank staff usually stack 1 yuan coins together and roll them into the shape of a cylinder. The diameter of the bottom of the cylinder is 2.5 cm and the height is 9.25 cm. Can you figure out how many cubic centimeters each dollar coin has? (The number shall be kept to one decimal place)