Pronunciation: /koʊn/ Explain
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Manipulative 1 - Cone Created with GeoGebra.

A cone is a 3-dimensional geometric figure that has a circle for a base and sides that come to a point.

Formulas for a Cone
Surface AreaA=pi*r(squareroot(r^2+h^2) +r*h)
Slant LengthS=squareroot(r^2+h^2)
Implicit Equationr*(x^2+y^2)/h = (z-z0)^2
Parametric Equationx=((h-u)/h)*r*cos(theta), y=((h-u)/h)*r*sin(theta), z=y, 0<=u<=h, 0<=theta<=2*pi


Conic means having to do with a cone, such as a conic section; cone-like in shape; or is short for conic section. Conical means cone-like in shape, such as a conical frustum.


  1. McAdams, David E.. All Math Words Dictionary, cone. 2nd Classroom edition 20150108-4799968. pg 42. Life is a Story Problem LLC. January 8, 2015. Buy the book

Cite this article as:

McAdams, David E. Cone. 12/21/2018. All Math Words Encyclopedia. Life is a Story Problem LLC.

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Revision History

12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
6/25/2018: Removed broken links, updated license, implemented new markup, updated GeoGebra apps. (McAdams, David E.)
1/5/2010: Added "References". (McAdams, David E.)
4/28/2008: Initial version. (McAdams, David E.)

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