The mathematical value pi has always been a curious number throughout history.
Here is Aryabhatta's version of the value of pi:
Lets split the words and understand the meaning:
चतुरधिकम् शतम् - Four more than hundred (=104)
अष्टगुणम् - multiplied by 8 (104 x 8 = 832)
द्वाषष्टि = 62
तथा सहस्राणाम् = of 1000 as such (=62000; totalling 62832)
अयुत द्वय = 10,000 x 2 (=20,000)
विष्कम्भस्य = of the diameter
आसन्न: - approximately
वृत्त परिणाह: - to the circumference.
In effect, 62832/20000 = 3.1416!
It interesting to note the large numbers he has used to arrive at Pi and the remark that pi is only an approximate value.