Math CentralQuandaries & Queries


Question from Jimmy, a student:

A bowl of water, being a hemisphere has a radius of 36cm.
Water is filled in the bowl and has depth of 18 cm.
Find the surface area of the water?

Hi Jimmy,

I drew a diagram of your bowl.


AB is a radius of the bowl so its length is 36 cm. The depth of the water is 18 cm so the length of AB is 18 cm. ABC is a right triangle. What does Pythagoras Theorem tell you about the length of BC?


About Math Central


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.
Quandaries & Queries page Home page University of Regina PIMS