Question

a vessel is 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
please send me answer​

Answer 1

Answer :- D of hemisphere = 14cm

r = 14/2 = 7cm

CSA of hemisphere = 2πr²

= 2 x 22/7 x 7 x 7 = 44x7

= 308cm²

r = 7cm

h(total) = 13cm

h(cylinder) = 13 - radius of heisphere = 13-7 = 6cm

CSA of Cylinder = 2πrh = 2 x 22/7 x 7 x 6

= 44x6 = 264cm²

Surface area of the vessel = CSA of Hemisphere + CSA of Cyclinder

= 308+264 = 572cm²

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