Pi is an irrational number, so it can not be expressed as an exact fraction. Some estimates in fraction form are 22/7, 333/106, 355/113, and 103993/33102.
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pi is an irrational number and so there is no equivalent fraction.
a denominator is the bottem number of the fraciton
pi is irrational so there can be no fraction that is equivalent. 22/7 is often used as a simple approximation.
pi radians is 180 degrees.
because, diameter = 2 x radius