pi is an irrational number. It is irrational because it cannot be expressed as a ratio of two integers.
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The square of pi is an irrational number.
No. sqrt(2)/pi is not rational.
If you multiply or divide an irrational number - such as pi - by ANY rational number (except zero), you will ALWAYS get an irrational number.
Well, (pi) x (1/pi) = 1 .
The square of pi is an irrational number because it can't be expressed as a fraction.