Spherical bullets can be made out of a solid lead cube whose edge measures........Find the volume of required material ?

Question

Spherical bullets can be made out of a solid lead cube whose edge measures 33 cm. Each bullet has a radius of 1.5 cm and is required to be covered by another material of thickness 2 mm.
Find the volume of required material ?

Answer 1

No of Bullets =Voe.Of Cube/Vol. Of Sphere
=a^3/[pi*(4/3)*r^3]
=(33)^3/[pi*(4/3)*(1.5)^3
=2541 nos
Vol . Of sheet to be covered
=2541*[(4/3)*pi*(1.7)^3]-[(4/3)*pi*(1.5)^3]
=16376.62 cm^3