The side area of a cylinder is 351.68 square decimeters, and the bottom radius is 7 decimeters. Find the volume of the cylinder. I need it before 9:15!

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• 1. The side area of a cylinder is expanded to get a square. It is known that the diameter of the bottom surface of the cylinder is 2 decimeters, and the volume of the cylinder is cubic decimeters The number obtained keeps the whole number
• 2. The sum of the volumes of a cylinder and a cone with equal base and height is 80 cubic decimeters. What is the volume of the cylinder and the volume of the cone
• 3. A cylinder and a cone have the same height and the same base. Their volume is 60 cubic centimeters. So, what is the volume of a cylinder______ Cubic centimeter. What's the volume of a cone______ Cubic centimeter
• 4. If a cylinder and a cone are of equal height and equal bottom, and the difference between their volumes is 24 cubic decimeters, what is the volume of the cone? What is the volume of the cylinder?
• 5. The volume sum of a cylinder and a cone with equal base and height is 96 cubic decimeters, the volume of the cylinder is (), and the volume of the cone is ()
• 6. The volume difference between a cylinder with equal base and height and a cone is 80 cubic meters. The volume of a cylinder is () cubic decimeters,
• 7. The volume of a cylinder is 3 cubic decimeters. How many cubic decimeters is the volume of a cone with the same base and height?
• 8. As shown in the figure, in △ ABC, ab = AC, BD = CE, DF = EF
• 9. Please make the image of functions F1 (x) = LG (- x), F2 = - lgx, F3 (x) = LG | x | and F4 (x) = LG | x | and observe the relationship between the image and f (x) = lgx image. Can you summarize the general rules and apply them to other function images?
• 10. As shown in the figure, in △ ABC, take AB AC as the edge and make equilateral △ abd △ ace outward respectively. Given DC = 10, find the length of be and explain the reason
• 11. The volume of a cylinder is 250 cubic centimeters, and its side area is 100 square centimeters Solve by arithmetic
• 12. There are two cylinders with the same base area. The height of the first cylinder is 47 times that of the second cylinder. The volume of the first cylinder is 24 cubic centimeters. How many cubic centimeters more is the volume of the second cylinder than that of the first cylinder?
• 13. Two cylinders with the same base area have a height ratio of 5 to 3. The volume of the second cylinder is 60 cubic centimeters, and the volume of the first cylinder is 5 to 3 Elder brothers and sisters, please help me with the calculation process Please tell me why,
• 14. A cylinder is divided into two small cylinders. The surface area of the cylinder is increased by 80 square centimeters. The height of the cylinder is 30 centimeters. How many cubic centimeters is the volume of the cylinder? Please help me
• 15. The volume of a cylinder is 480 cubic meters, the bottom area is 24 square meters, and the height is () meters
• 16. The volume of a cone is 24 cubic meters, the bottom area is 12 square meters, and the height of the cone is 12 square meters______ Rice
• 17. The volume of a cylinder is 94.2 cubic meters. The distance between the two bottoms is 15 meters. How many square meters is the bottom area of the cylinder
• 18. The volume of a cylinder is 42.39 cubic meters, the bottom area is 7.065 square meters, how many meters high
• 19. A section of cylindrical steel with a bottom diameter of 8 cm and a height of 9 cm. Cast it into a conical part with a height of 12 cm. What is the bottom area of the part? Give me the formula! What is the simplest integer ratio of 91 out of 13?
• 20. A cylindrical steel part with a bottom radius of 10 cm and a height of 15 cm is melted and cast into a conical steel part with a height of 60 cm. The bottom area of the cone should be