In geometry, a bicone or dicone (from la|bi-, and Greek: di-, both meaning "two") is the three-dimensional surface of revolution of a rhombus around one of its axes of symmetry. Equivalently, a bicone is the surface created by joining two congruent, right, circular cones at their bases.
A bicone has circular symmetry and orthogonal bilateral symmetry.
For a circular bicone with radius R and height center-to-top H, the formula for volume becomes
V=
| 2 | |
| 3 |
\piR2H.
For a right circular cone, the surface area is
SA=2\piRS
S=\sqrt{R2+H2}