No.
rational * irrational = irrational.
The same as you would a rational number. Its distance from zero will represent the number, whether it is rational or irrational.
If its decimal representation is either terminating or a repeating number then it is rational. Otherwise it is irrational.
10.01 is a rational number
If it can't be expressed as a fraction then it is an irrational number
Rational
It is a rational number.
is 34.54 and irrational or rational. number
it is a rational number but 4.121314..... is an irrational no
Irrational.
Any positive number is always bigger than a negative number - whether they are rational or irrational.
Such a product is always irrational - unless the rational number happens to be zero.