The external radius of the hollow sphere will be :

By melting two solid metallic spheres or radii 1 cm and 6 cm, a hollow sphere of thickness 1 cm is made. The external radius of the hollow sphere will be

  1. 6 cm
  2. 7 cm
  3. 8 cm
  4. 9 cm
Anurag Mishra Professor Asked on 29th December 2015 in Maths.
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  • 1 Answer(s)

    Answer is 9 cm.

    Monis Rasool Professor Answered on 29th December 2015.
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