To 8 places its value is 3.14159265.
Pi is the ratio of a circle's circumference to its diameter. It's an irrational number; that means it can't be expressed as a fraction, or an exact or repeating decimal.
Two convenient approximations are:
Pi ≈ 22/7 = 3.142857142857142857142857...
1/Pi ≈ 113/355 (a very interesting curiosity with the first 3 odd digits!)
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The value of Pi is 3.14 so the value of Pi by 2 is 6.28.
The value for Pi for math is 3.14. Pi is the 16th letter in the Greek alphabet.
Archimedes estimated the correct value of pi
the value of pi can be derived as the ratio between the circumference and diameter of every circle, say pi = circumference/diameter
pi is approximately equal to: 3.141592653589793238462643383279...