Radius of a circumscribed sphere of a Regular Octahedron

Description

An octahedron is a polyhedron with eight faces. A regular octahedron is a Platonic solid composed of eight equilateral triangles, four of which meet at each vertex.The radius of the circumscribed sphere (one that touches the octahedron at all vertices) is related with the edge of the octahedron.

Related formulas

Variables

rcRadius of the circumscribed sphere (m)
aLength of the edge of the octahedron (m)