At The Morning After Tuesday Afternoon, I bring you Joel Gilmore’s Pi Song:
To find a circle’s area will often make you queasy,
It’s not just simply length by width or anything that easy.
But then one day you’ll find a number that will help your brain,
It might be transcendental but it’s sure to save you pain!
If you were to say it all then you’d be here a long time.
Multiply by two r and then you will have a curved line
Read the rest here.