Yes.
2 x 3.14 = 6.28
= 6 7/25
= 157/25
which is rational.
If you are using 3.14 as an approximation to {pi}, then 2 x {pi} is not rational.
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No, it is not.
314 ÷ 2 = 157
The given whole number of -2 is a rational number
It is not. It is the rational number 6.28 = 628/100.
2 is a rational number and it is also a prime number