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A cylindrical rod whose height is 8 time...

A cylindrical rod whose height is 8 times of its radius is melted and recast into spherical balls of same radius. The number of the balls will be

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RD SHARMA ENGLISH-SURFACE AREA AND VOLUME OF A SPHERE -All Questions
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  2. If a sphere of radius 2r has the same volume as that of a cone w...

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  3. A metallic spherical shell of internal and external diameters 4 cm and...

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  4. The surface area of a sphere of radius 5 cm is five times the curved s...

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  6. In a sphere the number of faces is 1         (b)  2      (c)  3 ...

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  7. The total surface area of a hemisphere of radius r is pir^2 (b) 2p...

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  8. The ratio of the total surface area of a sphere and a hemisphere of ...

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  9. A sphere and a cube are of the same height. The ratio of their volu...

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  10. The largest sphere is cut off from a cube of side 6cm. The volume o...

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  11. A cylindrical rod whose height is 8 times of its radius is melted and ...

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  12. If the ratio of volumes of two spheres is 1:8, then the ratio of th...

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  13. If the surface area of a sphere is 144pi\ m^2, then its volume (...

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  14. If a solid sphere of radius 10 cm is moulded into 8 spherical solid...

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  15. The ratio between the volume of a sphere and volume of a circumscri...

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  16. The ratio of the volume of a cube to that of sphere so that the sphe...

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

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  18. A sphere is placed inside a right circular cylinder so as to touch ...

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  19. A cone and a hemisphere have equal bases and equal volumes the rati...

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  20. A cone, a hemisphere and a cylinder stand on equal bases and have t...

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