HOUspain [area_and_volume]

A spherical surface is the locus of the points of space that are equidistant from a fixed point (center of the sphere) and a sphere is the space bounded by spherical surface.

The area of spherical surface is as four time the area of a maximum circle (circle that has been from to cut a sphere whit a plane that is in the center of this sphere):

$tabular{11}{11}{{AREA = 4.Pi.R^2}}$

The volume of a sphere is equal to:

$tabular{11}{11}{{VOLUME={4/3}.Pi.R^3}}$