2 times the radius = diameter. Extra if you want to overlap!
On Mar 24, 6:24 am, Bill <[email protected]> wrote:
> Plus twice the thickness of the paper if you want it to go around the
> outside of a tube/drum.
>
> On Mar 24, 6:25 am, "Paul McCool" <[email protected]> wrote:
>
> > Ok, time for ME to go back to Geometry class....
>
> > Paul M.
>
> > ----- Original Message -----
> > From: "Wolfgang Holzinger" <[email protected]>
> > To: <[email protected]>
> > Sent: Monday, March 23, 2009 11:21 PM
> > Subject: [Papermodels II 35211] Re: Need help with how to measure
>
> > correctly...
>
> > > Hi abbe
>
> > >> I'm kind of new to this and need some help. I am trying to make a
> > >> straight piece so I can put it around a circle (like how a drum would
> > >> look)- can you tell me how I should mathematically measure this
> > >> please? Anyone know? I remember that it's a formula of some sort- just
> > >> forgot what it was. Thanks ahead of time. Also, I am creating a hand
> > >> our of paper and it's not going to well I am having problems
> > >> determining how to measure for some of the fingers? Anyone have any
> > >> suggestions? Hope someone will have some very good advice for me here.
> > > Let me see if I got you right (take a look at the attached
> > > picture):
> > > - you have the circle plate (green color) with a radius (white)
> > > - you want to make the strip (yellow part) and need the length of it
> > > If that is all you can calculate:
> > > length of strip: l
> > > radius of circle plate: r
> > > pi is a mathematical constant: 3.141592653...
> > > (If you don't know the number there is an easy way to calculate:
> > > take the numbers 1 3 5, double them 113355 and then divide
> > > 355 by 113 resulting in 3.141592920353982301 which is very
> > > close to pi)
>
> > > Then the formula is: l = 2 * r * PI
>
> > > Hope this helps
>
> > > Best regards, Wolfgang
>
> > > PS: I found a very good article about the number pi on
> > > wikipedia (http://en.wikipedia.org/wiki/Pi)
>
> > > --
> > > MfG Wolfgang Holzinger
> > > E-Mail: [email protected]
>
> > > +--------------------------------------------------+
> > > | Linux -- because life is too short for a reboot! |
> > > +--------------------------------------------------+- Hide quoted text -
>
> > - Show quoted text -
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