The external and interenal diameter of a hollow copper-sphere are 20 cm and 16 cm respectively . By melting this sphere, how many solid bullets of diameter 4 cm each can be made?

The external and interenal diameter of a hollow metal spheres are 12cm and 10cm respectively. If the density of the metal be 4.9 gm/cc, then find the mass of the hollow sphere.

The internal and external radii of a hollow sphere are 3 cm and 5 cm respectively. The sphere is melted to form a solid cylinder of height 2 frac(2)(3) cm . find the diameter and curved surface area of the cylinder.

The internal and external radii of a hollow sphere are 3 cm and 5 cm respectively. The sphere is melted to form a solid cylinder of height 2 2/3cm . Find the diameter and the curved surface area of the cylinder.

The internal and external radii of a hollow sphere are 3 cm and 5 cm respectively. The sphere is melted to from a solid cylinder of height 2""2/3cm . Find the diameter and the curved surface area of the cylinder.

A hollow sphere with external and internal diameters as 24 cm and 16 cm, respectively, is melted into a cylinder with a base diameter of 32 cm. The height of the cylinder is closest to:

The length of diameter of a solid sphere of lead si 14 cm .if the sphere is melted, then calculate how many sphers with length of 3.5 cm radius can be made ?

A hollow sphere of internal and external diameters 6 cm and 10 cm respectively is melted into a right circular cone of diameter 8 cm. The height of the cone is

The external radius of a hollow sphere made of lead sheet of 1 cm thickness in 6cm.. If melting the sphere, a solid circular rod of 2cm radius is made, then find the length of the rod.

A hollow sphere of external and internal diameters 6 cm and 4 cm respectively is melted into a cone of base diameter 8 cm. What is the height of the cone?