Find the volume and total surface area of the remaining solid

From the solid cylinder whose height is 16 cm and radius is 12 cm,  a conical cavity of height 8 cm and of base radius 6 cm is holllowed out.  Find the volume and total surface area of the remaining solid.
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2 Answers

Volume of cylinder=area of base multiplied by height=144π*16=2304π.

Volume of cone=(1/3) base area multiplied by height:

Volume of cone=(1/3)π*36*8=96π.

The volume of the remaining solid is the difference of these two volumes=2208π=6936.64cc approx.

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