Happy Pi day folks !(adsbygoogle = window.adsbygoogle || []).push({});

Heres a general misconception im having. It might turn out to be a pretty easy question so please do help me.

If i pull out my compass to a radius of 7 cm and draw a circle on a paper. Then i'll take a piece of thread and cut it such that it matches exactly with the circle on paper and take the length of that particular thread and divide by 14cm, should i get the value of pi ?

If its so, why isnt pi an irrational number. After all im dividing the circumfrence i've got by 14 cm.

So it should a rational number.

For example, if the circumfrence is 50.123456 cm ( i've not measured yet just an example)

And i divide it by 14cm

I shall get 50123456/14000000 as value of pi, which is supposedly rational ?

Is it an contradiction ?

**Physics Forums - The Fusion of Science and Community**

# Pi Misconception

Have something to add?

- Similar discussions for: Pi Misconception

Loading...

**Physics Forums - The Fusion of Science and Community**