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If a sphre of radius of 2r has the same ...

If a sphre of radius of 2r has the same volume as that of a cone with circular base of radius r, then find the height of the cone.

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MODERN PUBLICATION-SURFACE AREAS AND VOLUMES-EXERCISE
  1. Find the surface area of a sphere of radius 14 cm.

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  2. Find the volume of the sphere whose surface are is 154cm^2.

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  3. If a sphre of radius of 2r has the same volume as that of a cone with ...

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  4. If a sphere is inscribed in a cube, find the ratio of the volume of cu...

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  5. Find the total surface area of a hemisphere of radius 16 cm.

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  6. The surface area of a sphere of radius 5 cm is five times the area of ...

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  7. Find the maximum volume of a cone that can be carved out a solid hemis...

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  8. What amount of milk that a hemispherical bowl of radius 10 0cm can hol...

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  9. If the volumes of two spheres are in the ratio 6: 27, find the ratio o...

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  10. True/false Two identical solid cubes of side a are joined end to end. ...

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  11. True/false Two identical solid hemisphers of equal base radius r cm st...

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  12. True/false IF the volumes of two spheres are in the ratio 64:27, then ...

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  13. True/false The largest possible right circular cone is cut out of a cu...

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  14. True/false If a sphere is inscribed in a cube, then the ratio of the v...

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  15. If the length of the diagonal of a cube is 6sqrt3 cm, then the length ...

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  16. True/false For a right circular of base radius 7 cm and height 14 cm, ...

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  17. A metal pipe is 77 cm long. The inner diameter of a cross section is 4...

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  18. True/false In case of a hollwo cylinder. Inner curved surface area of ...

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  19. True/false If total surface of a cube of side is 294cm^3, then a=8cm.

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  20. Fill ups Diagonal of a cuboid dimensions lxxbxxh is …………….. .

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