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The diameter of a copper sphere is 6 cm....

The diameter of a copper sphere is 6 cm. The sphere is melted and is drawn into a long wire of uniform circular cross section. If the length of the wire is 36 cm, find its radius.

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MODERN PUBLICATION-SURFACE AREAS AND VOLUMES-EXERCISE
  1. A metallic sphere of radius 4.2 cm is melted and recast into the shape...

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  2. A cylinder whose height is two thirds of its diameter has the same vol...

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  3. The diameter of a copper sphere is 6 cm. The sphere is melted and is d...

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  4. The diameter of a copper sphere is 6 cm. It is beaten and drawn into a...

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  5. How many lead shots each 0.3 cm in diameter be can made from a cuboid ...

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  6. A spherical ball of lead 3 cm in diameter is melted and re casted into...

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  7. A measuring jar of internal diameter 10 cm is partially filled with wa...

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  8. The interior of a building is in the form of a right circular cylinder...

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  9. In the Fig., solid consists of a cylindrical section of length 6.5 cm ...

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

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  11. If the total surface area of a cube is 54x^2. Find its lateral surface...

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  12. Find the total surface area of a cuboid which is 6 cm long, 7 cm wide ...

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  13. Find the edge of a cube whose surface area is 432m^2.

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  14. The surface area of a cuboid is 1300cm^2. If its length is 15 cm and h...

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  15. If two cubes, each of side 6 cm are joined face to face, then find the...

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  16. Write the number of surfaces of a right circular cylinder.

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  17. Base radius of two cylinder are in the ratio 2 : 3 and their heights a...

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  18. The heihgt of a cone is 15 cm. if its volume if 500 picm^3. Then find ...

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  19. The height and the slant height of a cone are 21 cm and 28 cm respecti...

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  20. Find the volume of the largest right circular cone that can be placed ...

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