"Add four to 100, multiply by eight, and then add 62,000. By this rule the circumference of a circle with a diameter of 20,000 can be approached."
Aryabhata worked and came up with a very close number for pi. In his Ganita, or mathematical statement, he said "Add four to 100, multiply by eight, and then add 62,000. By this rule the circumference of a circle with a diameter of 20,000 can be approached." His estimate for pi was 3.1416. This is very close to today’s number of 3.14159. He also found that pi was irrational which was rediscovered in the 1700s. Pi is very important; one reason is that without it we would not have a way to measure circles. Without it we would have no wheels or machines. Another reason pi is important is because it is used to calculate the speed of circular motion. Without pi we could not measure how fast vehicles go today. This is one reason Aryabhata should be awarded a Nobel Prize.