My Math Forum Equation of a cylinder in 3 dimensional space.

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 December 26th, 2012, 03:21 AM #1 Joined: Dec 2012 Posts: 2 Thanks: 0 Equation of a cylinder in 3 dimensional space. Hi Friends, Please, I like to know the equation of a cylinder with a given radius, r and a given height, h in 3 dimensional space(x,y,z). We need this in other to verify whether a given point, say (1,2,3) is in the cylinder or not. Thanks.
 December 26th, 2012, 03:25 AM #2 Math Team   Joined: Nov 2010 From: Greece, Thessaloniki Posts: 1,953 Thanks: 116 Math Focus: pre pre pre pre pre pre pre pre pre pre pre pre calculus Re: Equation of a cylinder in 3 dimensional space. [color=#000000]$x^2+y^2=r^2$ where r is a number and it is the radius of the cylinder.[/color]
 December 26th, 2012, 03:42 AM #3 Senior Member   Joined: Mar 2012 From: Belgium Posts: 646 Thanks: 10 Re: Equation of a cylinder in 3 dimensional space. in that equation there is no height included so it has to be over an interval for z

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