Question

The outer diameter of a spherical she'll is 12cm and it's inner diameter is 8cm. Find the volume of metal contained in the Shell. Also find its outer curved surface area.

Answer 1

vol. of metal=vol.of outer shell-vol.of inner shell ; 4/3pie R^3 -4/3 pie r^3 : = 4/3 pie(R^3 -r^3) ;= 4/3×22/7(1728- 512) ;=4/3×22/7×1216=107008/21

Answer 2

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