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If the areas of circular bases of a frustum of a cone are `4\ c m^2` and `9\ c m^2` respectively and the height of the frustum is 12 cm. What is the volume of the frustum?

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RD SHARMA-SURFACE AREAS AND VOLUMES-All Questions
  1. If r1 and r2 denote the radii of the circular bases of the frustum ...

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  2. If the slant height of the frustum of a cone is 6 cm and the perime...

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  3. If the areas of circular bases of a frustum of a cone are 4\ c m^2 ...

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  4. The surface area of a sphere is 616\ c m^2 . Find its radius.

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  5. A cylinder and a cone are of the same base radius and of same heigh...

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  6. The slant height of the frustum of a cone is 5 cm. If the differenc...

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  7. Conversion of Sphere into cylinder : The diameter of metallic sphere i...

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  8. A metallic sphere of radius 10.5 cm is melted and recast into small...

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  9. A solid is hemispherical at the bottom and conical above. If the su...

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  10. A solid sphere of radius r is melted and cast into the shape of ...

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  13. The number of solid spheres, each of diameter 6 cm that could be mo...

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  14. A sphere of radius 6 cm is dropped into a cylindrical vessel partly...

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  15. If the radii of the circular ends of a bucket of height 40 cm are o...

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  16. If a cone is cut into two parts by a horizontal plane passing throu...

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  17. The height of a cone is 40 cm. A small cone is cut off at the top by a...

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  18. A solid consists of a circular cylinder with an exact fitting right...

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  19. A reservoir is in the shape of a frustum of a right circular cone. ...

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  20. Water flows at the rate of 10 meter per minute through a cylindrical p...

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