Aryabhatta

From SEDSWiki

Aryabhatta, born in 476 AD at Kusumapura, modern day Patna, was an astronomer and a mathematician. He wrote a two part text called Aryabhatiyam in 499 AD at the age of twenty three. The text covers: arithematic, algebra, trigonometry and astronomy. He gave the formulae for the areas of triangle and circle, attempted to give a formulae for the volume of a sphere and pyramid. He was the first to give the idea of pi as the ratio of circumference to diameter of a circle and arrived at the value of pi as 3.1416. He also calculated eclipses and postulated on heliocentricity.