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.​

Answer 1

inner surface area of vessel = 43.96 cm²

Explanation:

inner surface area of the vessel = 2πr

where radius = diameter/2 = 14/2 = 7cm

π = 3.14

inner surface area = 2 * 7 * 3.14 = 43.96 cm²