Digits of PiDate: 6/14/96 at 19:44:41 From: MR ADAM B MINGAL Subject: The digits of pi How many digits of the ratio "pi" have we figured out, and what are they? 3.14159............. Is it endless? How did people figure it out? From where did it evolve? Was there an experiment testing the ratio? Who invented the 'magic' number? Is it Greek? Sincerely, Adam Mingal, 14 yrs old Date: 6/19/96 at 10:49:35 From: Doctor Peter Subject: Re: The digits of pi Pi is an example of what is known as an irrational number, meaning that it cannot be expressed as a ratio (fraction) of two integers. In other words, there is no EXACT decimal equivalent, although 3.1415926 is good enough for many applications. The ancient Egyptians had an idea of the concept of pi being about equal to 3; that was about 4000 years ago. I know computers have been used to calculate pi to somewhere around a million digits, but I am not sure how far that has been done. I almost forgot, the "formal" definition of pi: the ratio between the circumference and diameter of a circle. - Doctor Pete The Math Forum Be sure to visit our website! http://mathforum.org/dr.math/ |
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