Wolfram|Alpha has dipyramid surface area calculators. Solve problems related to canonical 3‐, 5‐, 6‐, 7‐, 8‐, 9‐, or 10‐dipyramid; equilateral triangular or pentagonal dipyramid; elongated pentagonal, square or triangular dipyramid; gyroelongated square dipyramid; and regular octahedron surface areas.
