Pi Limericks
The number pi’s a ratio pal.
Whose fame is international.
C to diameter,
endless parameter,
to me it’s all irrational!
- Paul Doherty

'Tis a favorite project of mine
A new value of pi to assign.
I would fix it at 3
For it's simpler, you see,
Than 3 point 1 4 1 5 9
- http://www.markcarter.me.uk/math.html

If inside a circle a line
Hits the center and goes spine to spine
And the line's length is "d"
the circumference will be
d times 3.14159
- http://www.markcarter.me.uk/math.html

Three point one four one five nine two
It's been around forever - it's not new
It appears everywhere
In here and in there
It's irrational I know but it's true !
- http://www.geocities.com/SiliconValley/Pines/5945/facts.html

Now there is an ancient Greek letter,
And I think no other is better.
It isn't too tall,
It might look very small,
But its digits, they go on forever.
- http://www.kathimitchell.com/piceleb.html