A hemispherical

bowl has an
external radius
of 18cm and is
made of wood
3m thick.
calculate the
volume of the
wood in the
bowl.

2 answers

volume of wood
= (4/3)π(18^3) - (4/3)π(15^3)
= .....

The question would be more interesting if there was an opening with some dimension so that
you can something in the bowl.
the bowl is a hemisphere, so cut those values in half.