An draibh a tha tetrahedron air-loidhne casan

Air casan a thèid do chuideachadh a bhith a ' lorg an leabhar de tetrahedron.
An tetrahedron e leis polyhedron-aodainn a tha ceithir triangles, an tetrahedron 4 faces, 4 vertices agus 6 oirean.

Cuir a-steach na miosan oir na tetrahedron
a:

Mar thoradh air:
V =