1. A solid is in the shape of a cone standing on a hemisphere with both their radii being equal to 1 cm and the height of the cone is equal to its radius. Find the volume of the solid in terms of .
The volume of the solid is given by :
The volume of solid = Volume of cone + Volume of a hemisphere
The volume of cone :
or
or
And the volume of the hemisphere :
or
or
Hence the volume of solid is :