Question

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.
​

Answer 1

Answer:

surface area = S.A of Hemisphere + C.S.A of cylinder

=(2πr

2

)+2πrh

=2πr(r+h)

=2×

7

22

×7(7+6)

=2×22×13

=572cm

2

Answer 2

Answer:

Height of cylinder= Height of bowl− Radius of hemisphere=13−7=6 cm

Now, capacity of bowl = Volume of hemisphere + volume of cylinder

refer the picture for the equations and formula