The diameter of the base of a cylinder is 21cm and its height is 18cm. A hemisphere and a cone of diameter same as that of the cylinder are joined on either side of the cylinder. If the height of the cone is 9cm, find the volume of solid obtained.
The diameter of the base of a cylinder is 21cm and its height is 18cm. A hemisphere and a cone of diameter same as that of the cylinder are joined on either side of the cylinder. If the height of the cone is 9cm, find the volume of solid obtained.