The circumference of the bottom surface of a cylinder is 31.4 cm, the height is 4 cm, and the side area of it is______ Square centimeter. The height of the cone with the same base and volume______ Cm

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• 1. For a cylinder and a cone, the ratio of the circumference of the bottom surface is 2:3, the ratio of their volume is 5:6, and the simplest integer ratio of the height of the cone and the cylinder is () A. 54:23B. 54:2C. 15:8D. 8:5
• 2. The volume of a cylinder is equal to that of a cone. The circumference of the bottom of the cylinder is twice that of the cone. The height of the cylinder is () A. 16b. 6x C. 112d. 12x
• 3. For a cylinder and a cone, the circumference of the bottom area of the cylinder is one third of that of the cone, the height of the cylinder is five sixths of that of the cone, and the volume of the cylinder is a fraction of that of the cone
• 4. The volume and height of a cylinder and a cone are equal. If you know that the circumference of the bottom of the cylinder is 12.56 decimeters, what is the area of the bottom of the cone?
• 5. For a cylinder and a cone, the ratio of the circumference of the bottom surface is 2:3, the ratio of their volume is 5:6, and the simplest integer ratio of the height of the cone and the cylinder is () A. 54:23B. 54:2C. 15:8D. 8:5
• 6. For a cylinder and a cone, the ratio of the circumference of the bottom surface is 2:3, the ratio of their volume is 5:6, and the simplest integer ratio of the height of the cone and the cylinder is () A. 54:23B. 54:2C. 15:8D. 8:5
• 7. For a cylinder and a cone, the ratio of the circumference of the bottom surface is 2:3, the ratio of their volume is 5:6, and the simplest integer ratio of the height of the cone and the cylinder is () A. 54:23B. 54:2C. 15:8D. 8:5
• 8. For a cylinder and a cone, the circumference of their bottom surface is equal, and the ratio of height is 8:9, then the ratio of their volume is ()
• 9. The volume of a cylinder is 6.28 cubic centimeters and the circumference of its bottom surface The volume of a cylinder is 6.28 cubic decimeters, the circumference of its bottom is 12.56 decimeters, and how many decimeters is its height
• 10. The side area of a cylinder is 942cm2, its volume is 2355cm3, and its bottom area is______  cm2．
• 11. The volume of a cylinder is equal to that of a cone. The height of the cylinder is 18 cm. Its bottom area is three times that of the cone. How high is the cone?
• 12. The circumference of the ground is 62.8 cm, and the height is 6 cm. The iron cylinder is fused into a cone. The bottom area of the cone is 25 square cm. What is its height
• 13. The circumference of the bottom surface of a cylinder is 25.12 cm and the height is 24 cm. How many cubic centimeters of volume is it cut into the largest cone?
• 14. When the radius of the bottom of a cylinder increases by 3 cm, the side area increases by 62.8 cm. If the perimeter of the bottom increases by 2 cm, how much does the side area increase
• 15. The radius of the bottom of a cylinder is 6cm and the height is 10cm. Its side expansion is () shape. The perimeter of the expansion is () and the area is () A good reward
• 16. The bottom area of a cylinder is 6cm and the height is 10cm. Its side expansion is in the shape of []. The perimeter of the expansion is in the centimeter and the area is in the square centimeter
• 17. As shown in the figure, after a cylinder is cut off 5cm, the surface area of the cylinder is reduced by 31.4cm2
• 18. The surface area of a cylinder is 314 square centimeters. The bottom radius of the cylinder is three times the height. What is the side area of the cylinder?
• 19. The surface area of a cylinder is 314 square centimeters. The bottom radius of the cylinder is 13 times higher. What is the side area of the cylinder?
• 20. The surface area of a cylinder is 314 square centimeters. The bottom radius of the cylinder is 4 / 1 of the height. What is the side area of the cylinder?