Formulae
The following formulae for volume and surface area can be used if all faces are regular, with edge length a:
If the edges are not the same length, use the individual formulae for the tetrahedron and triangular prism separately, and add the results together.
Read more about this topic: Elongated Triangular Pyramid
Famous quotes containing the word formulae:
“I don’t believe in providence and fate, as a technologist I am used to reckoning with the formulae of probability.”
—Max Frisch (1911–1991)