A solid right circular cone of diameter 14 cm and height 8 cm is melted to form a hollow sphere. If the external diameter of the spere is 10 cm, find the internal diameter.

A solid right circular cylinder of diameter 12 cm and height 27 cm is moulded into a sphere. The radius of the sphere is

A solid right circular cylinder of diameter 12 cm and height 27 cm is moulded into a sphere. The radius of the sphere is

A solid right circular cylinder of diameter 16cm. And height 2cm. Is made by melting 12 spheres of equal size. The diameter of each sphere is

Three solid spheres of diameters 6 cm, 8 cm and 10 cm are melted to form a single solid sphere. The diameter of the new sphere is

A metallic solid right circular cone is of height 84 cm and the radius of its base is 21 cm. It is melted and recast into a solid sphere. Find the diameter of the sphere.

Three solid metallic spheres of diameters 6 cm, 8 cm and 10 cm are melted and recast into a new solid sphere. The diameter of the new sphere is :

Find the number metallic circular plates (discs) with base diameter 1.5 cm and height of 0.2 cm to be melted to form a right circular cylinder of height 10 cm and diameter 4.5 cm.

A cone of height 4 cm is melted and recast into a sphere of diameter 8 cm .Find the radius of the base of the cone.

A cone of height 4 cm is melted and recast into a sphere of diameter 8 cm .Find the radius of the base of the cone.