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

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

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

Spherical Shell A solid enclosed between two concentric spheres is called a spherical shell. For a spherical shell, if $$R$$ and $$r$$… Click here to read more