A hollow sphere of internal and external radii 6 cm and 8 cm respectiv – InterviewSolution

InterviewSolution

1.	A hollow sphere of internal and external radii 6 cm and 8 cm respectively, is melted and recast into small cones of base radius 2 cm and height 8 cm.Find the number of cones.
Answer» Volume of sphere=NVolume of 1 cone `4/3pi(R^3-r^3)=N1/3pir^2h` `4/322/7(8^3-6^3)=N1/322/72^28` `N=37`.

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