Answer: YES
Explanation:
THREE WAYS TO DETERMINE:
If the number given is in integer, it is rational.
If the number given is fraction, it is rational.
If the number given is decimal, as long as it is terminating or repetitive decimal, it is rational. (Because then you can write it as a fraction which leads to the second point)
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0.35217534
It is a terminating decimal, which fits the third point.
So it is rational.
Hope this helps!! :)