History of Indian Mathematics

[SRS]

But for what purpose did a civilisation need pi if not for wheel making first? With the knowledge of pottery the mankind aquired the next knowledge called the wheel. With the aquiring of wheel knowledge they had the need to know about pi. Do you want to say that Inkas, Mayas and Aztekes are not civilisations? They did not know about wheels!

Rv. Dinakaran has taught you well indeed, but not about your own history. Wheels? Pi has many, many uses beyond wheels. The ancient Indians had advanced spacecraft (read Ramayana). Pi is a concept, as someone has already pointed out. The practical application is not at all necessary. What practical application does infinity have? Pure math is justified on its own terms.