A pyramid is a polyhedron with one base that is any polygon . Its other faces are triangles.[br][br]The volume of a 3 -dimensional solid is the amount of space it occupies. Volume is measured in cubic units ( in^3,ft^3,cm^3,m^3 , etc). Be sure that all of the measurements are in the same unit before computing the volume.[br][br]The volume V of a pyramid is one-third the area of the base B times the height h.[br][br] V=1/3 * B* h[br]where B is the area of the base and h is the height of the pyramid.Proof of the Formula[br][br]Proof[br][br]In the given figure below[br]   Volume of Cube = Volume of 3 pyramids[br] or Volume of Pyramid=[math]\frac{1}{3}[/math] x Volume of Cube [br] (Cube र Pyramid को base area र उचाई एउटै छ )