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Who found the approximate and exact values of pi?
Different people found better and better approximations. The exact value can only be expressed as the symbol for pi; it has been proven that pi is irrational, in other words, you can't write it exactly as a fraction with integers in the numerator and the denominator. Therefore, you might say that nobody found the exact value of pi, and nobody ever will.
Who were the first known people to value pi?
People from ancient civilizations knew about the value of pi but as it was then as it is now the exact value of pi has never been conclusively found because it is an irrational number.
What does PI mean in a math problem?
Pi = 355/113. That improper fraction is accurate to six decimal places. Pi is the ratio of a circle's circumference to its diameter. Please search on "Pi" using this site's search utility to find many questions that deal with it. Some links can be found below.
Formula to find area of circle?
The area of a circle can be found with the formula (pi)r^2
How many threes and nines are in the first million digits of pi?
There are 100229 threes and 100106 nines. A table of all the digit frequencies can be found at http://www.super-computing.org/pi-decimal_current.html
