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Pi represents a number that cannot be changed, therefore its value is constant.
Pi does not represent 3.14. Pi represents the ratio of the circumference of a circle to its diameter. Pi is an irrational number. 3.14 is but the crudest approximation of pi. A better approximation is 3.1416. Still better is 3.14159. The closest approximation commonly used in real-world applilcations is 3.14159262. If anything, 3.14 represents pi, and represents it very imprecisely. As for why the term "pi" was chosen to represent this important concept in mathematics, it was chosen because it is the initial letter of the greek word for "perimeter".
pi
the symbol gfor pie is n
It is unknown and it usually just represented as pi. It represents the ratio between the circumference and the diameter.
The Greek letter pi. pi(abcd) represents permutations of the letters in the set {a,b,c,d}.
3.1428571428
Pi is the 16th letter of the Greek alphabet and it represents the value of the circumference of a circle divided by its diameter which is an irrational number.
Pi is ROUNDED to 3.14. Pi really goes on for ever and ever.
In statistics, pi represents the population proportion of successes. Using p, the sample proportion of successes, inferences can be made about pi, although it is usually unknown.
Not from memory.