The bottom area of a cone is 9 square centimeters and its volume is 15 cubic centimeters. What is its height?
15 × 3 △ 9, = 45 △ 9, = 5 (CM); a: its height is 5 cm
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- 1. The volume of a cone is 24 cubic centimeters, its height is 4 centimeters, and its bottom area is 18 square meters______ (judge right or wrong)
- 2. A cuboid wood block, cut from the top of the cuboid 5 cm high, the rest is a cube, the surface area reduced by 120 square centimeters______ Cubic centimeter
- 3. A cuboid paper box, its bottom is a square with side length of 5 decimeters, its side area is 120 square decimeters
- 4. The volume of a cuboid is 640 cubic centimeters. If you cut off its height by 2 centimeters, you will become a cube. If the surface area of the cube is 384 square centimeters, then the surface area of the original cuboid is 384 square centimeters______ .
- 5. The surface area of this cuboid is______ Square decimeter, volume is______ Cubic decimeter
- 6. A section of square steel is 4 decimeters long with a cross section of 25 square centimeters. How many cubic centimeters is the volume of this section of square steel?
- 7. A cylinder has a volume of 200 cubic centimeters and a side area of 100 cubic centimeters. What's the surface area?
- 8. If the side area of a cylinder is 942 square centimeters and the volume is 2355 cubic centimeters, its bottom area is () flat If the side area of a cylinder is 942 square centimeters and the volume is 2355 cubic centimeters, its bottom area is () square centimeters
- 9. The side area of a cylinder is 942cm2, its volume is 2355cm3, and its bottom area is______ cm2.
- 10. Reduce the length of a cuboid by 5cm and turn it into a cube. The surface area of the cube is 60cm less than that of the original cuboid. What is the volume of the original cuboid?
- 11. If the height of a cylinder is reduced by 2 cm, the side area will be reduced by 50.24 square cm. How many cubic centimeters will its volume be reduced?
- 12. A cuboid has a volume of 36 cubic centimeters, a width of 5 centimeters, and a right side area of 24 square centimeters. What is the surface area of the cuboid?
- 13. 3x ^ 2-11x + 7 = 0
- 14. 3 x - 4
- 15. How to solve the equation 2 / 3x + 60 + x = 160?
- 16. 2F (x ^ 2 + x) + F (x ^ 2-3x + 2) = 9x ^ 2-3x-6 find f (60) The definition field of y = f (x) is r, and the above conditions are satisfied for any x belonging to R
- 17. Solve the equation about X: a (x-1) = 3x-2,
- 18. x=(x^2+3x-2)^2+3(x^2+3x-2)-2
- 19. 3x+60%x=108/25 To answer in detail
- 20. 60 parts of x plus 1 equals 90 parts of 3x x =?