. A solid in the form of a cone mounted on a hemisphere in such a way that the centre of
base of cone just coincide with centre of the base
of the hemisphere. Slant height of the cone is I
1
and radius of the base of the cone is =r, where
2
r is the radius of the hemisphere. Prove that the
TT
surface area of the solid is (11r + 2l)r sq. units.
4
base of cone just coincide with centre of the base
of the hemisphere. Slant height of the cone is I
1
and radius of the base of the cone is =r, where
2
r is the radius of the hemisphere. Prove that the
TT
surface area of the solid is (11r + 2l)r sq. units.
4
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