Introduction to Sphere A sphere is a solid figure bounded by a curved surface, every point of which is equidistant from a fixed... Click here to read more

Surface Area of a Sphere If we wind half of the surface of sphere with cord as shown in the figure, and then wind with... Click here to read more

Volume of a Sphere If a sphere is placed in a cylinder of the same diameter and with an altitude equal to the diameter,... Click here to read more

Spherical Shell Solid enclosed between two concentric spheres is called a spherical shell. For a spherical shell if and are outer and... Click here to read more