A cup is in the shape of a hemisphere of radius 9cm. Find the volume of the cup.
486π
972π
1944π
243π
Volume of a hemisphere = 23πr3
= 23π(9)3
=486π
A toy in shape of a hemisphere of radius 14 cm is surmounted by a cone of height 22 cm. Find the volume of the toy.
If a marble of radius 2.1cm is put into a cylindrical cup, full of water, of radius 5cm and height 6cm, then the volume of water that flows out of the cup is ________.