Bicone

 ( Elementary Geometry ) 

In geometry, a bicone or dicone (from , and Greek language: 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.

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Geometry For a bicone with radius $r$ and half-height $h$, the volume is

$V\; =\; \backslash frac\{2\}\{3\}\; \backslash pi\; r^2\; h$

and the surface area is

$A\; =2\backslash pi\; r\; \backslash ell\backslash ,$

where

$\backslash ell\; =\; \backslash sqrt\{r^2\; +\; h^2\}$

is the slant height.

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See also

• Sphericon
• Biconical antenna

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External links

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