A hemispherical bowl of internal radius 9 cm contains a liquid. This liquid is to be filled into cylindrical shaped small bottles of diameter 3 cm and height 4 cm. How many bottles are required to empty the bowl?
Given,
Radius of hemisphere (R) = 9 cm
Radius of cylinder (r) = 
Height of cylinder = 4 cm
Volume of hemisphere = n × volume of cylinder
= 
πR3 = n × πr2h
= 
= n × 1.52 × 4
= n = 
22