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A metallic sphere of radius 10.5 cm is melted and recast into small right circular cones, each of base radius 3.5 cm and height 3 cm. The number of cones so formed is (a) 105 (b) 113 (c) 126 (d) 135

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RD SHARMA ENGLISH-SURFACE AREA AND VOLUME OF A SPHERE -All Questions
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  3. A metallic sphere of radius 10.5 cm is melted and recast into small...

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  4. A cone and a hemisphere have equal bases and equal volumes. Find th...

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  6. A cylindrical tub of radius 12 cm contains water to a depth of 20 c...

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  7. The larges sphere is carved out of a cube of side 10.5 cm. Find the...

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  8. A sphere, a cylinder and a cone have the same radius and same height. ...

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  9. The diameter of a sphere is decreased by 25%. By what percent its c...

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  10. A hemispherical tank is made up of an iron sheet 1 cm thick. If the...

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  11. A capsule of medicine is in the shape of a sphere of diameter 3.5 mm....

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  12. The diameter of the moon is approximately one-fourth of the diamete...

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  13. Find the surface area of a sphere of radius 14cm.

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  14. Find the total surface area of a hemisphere of radius 10 cm

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  15. Find the radius of a sphere whose surface area is 154\ c m^2

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  16. The hollow sphere, in which the circus motorcyclist performs his st...

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  17. Find the volume of a sphere whose surface area is 154 c m^2

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  18. How many spherical bullets can be made out of a solid cube of lead who...

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  19. If a sphere of radius 2r has the same volume as that of a cone w...

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

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