1. ## pie

I would like to know how our py was worked out 3.14,and what the circumfference of a circle would be if its diameter was 100mm please.
And is there anyone that has a proof for a circle. Hope I,ve posted on the right thread.
Thanks

2. Originally Posted by clifford
I would like to know how our py was worked out 3.14,and what the circumfference of a circle would be if its diameter was 100mm please.
And is there anyone that has a proof for a circle. Hope I,ve posted on the right thread.
Thanks
this is pie ...

this is pi ...

3. Circumference = $\pi$d = 2 $\pi$r