PI - A MATHEMATICAL CONSTANT

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Definition of Pi: Pi is defined as the ratio of circles circumference ( C ) to the its diameter ( d ), i.e.,

π = C/d

  • The ratio π = C/d is constant for any size of circle.
  • The symbol used to represent pi is the Greek letter π.
  • π is irrational number.
  • π is also transcendental, i.e. it is not the root of any non-zero polynomial.
  • 22/7 is commonly used as an approximate value of π.

π is also used in Euler's identity 
eπi + 1 = 0

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