A solid cylinder has a radius of 21cm and a height of 18cm. A conical hole of radius r is drilled in the cylinder on...

      

A solid cylinder has a radius of 21cm and a height of 18cm. A conical hole of radius r is drilled in the cylinder on one
of the end faces. The conical hole is 12cm deep. If the material removed from the hole is 22/3 % of the volume of the
cylinder, find : (Use pi = 22/7)
a) the surface area of the hole.
b) the radius of a spherical balls made out of the material.
c) the surface area of the spherical ball.

  

Answers


sharon
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sharon kalunda answered the question on May 9, 2019 at 05:25


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