2. 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.
It is given that diameter of hemisphere=14 cm
Therefore, radius of hemisphere= r = cm
Radius of hemisphere= radius of cylinder = r =7 cm
Height of Cylinder = Height of Vessel-Radius of Hemisphere = h= 13-7 =6 cm
Inner Surface Area of Vessel = Inner Surface area of Cylinder + Inner Surface Area of Hemisphere