http://www.nios.ac.in/media/documents/secichcour/english/ch.15.pdf
Baudhayan was the first one ever to arrive at several concepts in Mathematics, which
were later rediscovered by the western world. The value of pi was first calculated by him.
As you know, pi is useful in calculating the area and circumference of a circle. What is
known as Pythagoras theorem today is already found in Baudhayan’s Sulva Sutra, which
was written several years before the age of Pythagoras.
