Since pi is an irrational number, then 3pi will be an irrational also.
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3.5 is real, rational, and natural. It's not irrational, integer, or whole.
It can be written as a fraction, so it is rational. It is not an integer, whole number or irrational.
0.4444
47 is a whole number, integer and rational.
No because all integers are rational numbers