Q. 17 3.8( 12 Votes )

A vessel in the form of a hollow hemisphere mounted by a hollow cylinder. The diameter of the hemisphere is 14 cm and the total height of the vessel is 13 cm. find the inner surface area of the vessel.

Answer :

Given radius of hemisphere & cylindrical (r)

=7 cm

Given total height of vessel = 13 cm

(h +r) = 13 cm

Inner surface area of vessel = 2π r (h +r)

= 2 ×π × 7 (13)

= 182π

=575 cm2

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