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.
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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