# Can you do this?

By Mordorian

@Mordorian (23)

India

7 responses

@sachinbhinge (502)

• India

17 Nov 06

Circumference of Circle= Pi* 2R ( R= radius)
so if u have a wheel of 1 Meter diameter u will get Pi meter circumference.
More the diameter more the accuracy.
roughly we take it 22/7. but Pi is varying with different methods.
Here is Pi calculated by Indian mathematician Arayabhatta around 5 Century as p= 62832/20000= 3.1416
Chinese Pi
The Chinese mathematician and astronomer Zu Chongzhi computed p to be between 3.1415926 and 3.1415927 and gave two approximations of p, 355/113 and 22/7, in the 5th century.
and see this link
http://mr.wikipedia.org/wiki/%27%E0%A4%AA%E0%A4%BE%E0%A4%AF%27_%28%CF%80%29_%E0%A4%85%E0%A4%B5%E0%A5%8D%E0%A4%AF%E0%A4%AF_%E0%A4%B0%E0%A4%BE%E0%A4%B6%E0%A5%80

@redyellowblackdog (10636)

• United States

17 Nov 06

3.141592654 is as many decimal places as I usually take it. But you asked how to calculate it! There are some obscure methods for extending the decimal places of PI. I have read about it in the past. But, before I go to the trouble of looking one up and explaining it, you will have to convince me you seriously want to know.