from a solid cylinder whoes height is 8cm and radius 7cm,a conical cavity of a height 8cm and radius 6cm,is hollowed out .find the slant height of the conical cavity and then,find the TOTAL SURFACES AREA of the remaining solid
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Volume of the solid cylinder = = 3.14 X X 8
= 3.14 X 36 X 8
= 904.32
Volume of the conical cavity =
= X 3.14 X X 8
= X 3.14 X 36 X 8
= 301.44
Volume of resulting solid = Volume of cylinder- Volume of conical cavity.
= 904.32 - 301.44 = 602.88
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