From: "Geo." 

It works the same way with letter size.

Letter size (A) is 8.5 x 11
Tabloid (B) is 11x17
(C) is 17x22
(D) is 22x34

Geo.

"John Beamish"  wrote in message
news:409a40c7{at}w3.nls.net...
> I knew there was a ratio; I knew there was something about folding.
Thanks
> for putting it all together.
>
> "John Beckett" 
wrote in message
> news:409a28cb.8696585{at}216.144.1.254...
> >
> > I am rather fond of A4 paper. You probably know the story, but for the
> > benefit of our imperial friends I will spare no details...
> >
> > An A0 sheet of paper is one square meter in a rectangle with sides
> > proportioned so that if you fold the sheet of paper in half (halving the
> > long side), the result has sides in the same proportion.
> >
> > Doing the maths shows that the long side is sqrt(2) times longer than
the
> > short side.
> >
> >
>
>

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