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It is not practical to work with the actual value of pi, because there is no actual value of pi. We all know that pi more or less equals 3.14159265 . . . but the number of decimal points in pi never ends. 3.14159 is extremely precise, and works for most uses.
The value of pi is an irrational number. Pi is the ratio of the circumference of a circle to the circle's diameter. Also, π is a transcendental number.
One can define an infinite number of fractions to successively approximate pi, and get closer and closer to pi's value. There is no closest fraction to pi. No matter how close the fraction is to pi you can always find one that is closer.
The value of pi has been calculated to billions of decimals, but in actual practice, you can usually round it to about 5, or perhaps 9, significant digits.
There were none because the actual value of pi has never been determined although it has been calculated to over 2 trillion digits its true value has never been found. The value of pi is a circle's circumference divided by its diameter which is an irrational number.
In Ancient Greece
If you're looking at a list under this question in the book, I'm sorry you're not letting me see it, and there's no way I can give you the best answer from that list. My choice for the fraction closest to the actual value of (pi) is 22/7 . It's only about 0.04% wrong.
The value of Pi is 3.14 so the value of Pi by 2 is 6.28.
The approximate value of pi is 3.14159265.
The value of pi (Ï€) is3.1415926535897932384626433832795028841971693993751.........
The term pi refers to the ratio of a circle's diameter to its circumference. The actual value is a transcendental number, that is, a number whose decimal value "keeps going to infinity" and does not repeat. As such, pi has no "full form" unless we choose to just write the symbol, which means "exactly the number" which is the ratio of a circle's diameter to its circumference. That's as "full" as we can make it. In other words, pi does have an exact value, but that value can not be expressed numerically.
The value for Pi for math is 3.14. Pi is the 16th letter in the Greek alphabet.