from a solid cylinder whose height is 2.4 cm and diameter is 1.4 cm , a conical cavity of the same height and same diameter is hollowed out . find the total surface area of the remaining solid to the nearest cm^2
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First calucate the slant height using formula , slant height^2=height^2+radius^2
Then u will find it as 25/10or 0.25
Then use the formula , pie*radius *slant height
Then
(22/7)*(7/10)*25/100=0.55cm2
Then u will find it as 25/10or 0.25
Then use the formula , pie*radius *slant height
Then
(22/7)*(7/10)*25/100=0.55cm2
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