In the figure, a solid consists of a hemisphere surmounted by a right circular cone, with radius 3.0cm and height 6.0cm. Find the volume of the solid

Assessment: JAMB UTME - Mathematics - 1988 Subject: General Mathematics

Question 1 Report

In the figure, a solid consists of a hemisphere surmounted by a right circular cone, with radius 3.0cm and height 6.0cm. Find the volume of the solid

Answer Details
The volume of the solid = vol. of cone + vol. of hemisphere

volume of cone =  1 2 π 2 h

=  1 π 3 × ( 3 ) 2 x 6 = 18 π c m 2

vol. of hemisphere =  4 π r 3 6 = 2 π r 3 3

=  2 π 3 × ( 3 ) 3 = 18 π c m 3

vol. of solid = 18 π  + 18 π

= 36 π cm3

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