Work out tetrahedron volume instantly with clear inputs, formula shown and shareable results.
A regular tetrahedron has four equilateral triangular faces. Its volume is a³/(6√2) and its surface area √3·a², being four triangles of area (√3/4)a² each.
Volume
V = a³ / (6√2) = (√2/12)a³
Surface area
S = √3·a²
Height
h = a√(2/3)
Four faces, six edges and four vertices, satisfying Euler's 4 − 6 + 4 = 2.
216 / (6√2) = 36/√2 ≈ 25.455844 cubic units.