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Question

Twenty-seven spherical solid metallic balls are melted to form some cylindrical rods. The radii of the rods are the same as those of the spherical balls.

If the height of a rod is twice its radius, then how many cylindrical metallic rods can be made from the spherical balls?


  1. 54

  2. 12

  3. 24

  4. 18


Solution

The correct option is D

18


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