To determine the type of product resulting from multiplying \( 35 \) and \( 3\pi \):
- \( 35 \) is a whole number (also considered a rational number, since it can be expressed as a fraction \( \frac{35}{1} \)).
- \( 3\pi \) is the product of a rational number (\( 3 \)) and an irrational number (\( \pi \)), which results in an irrational number.
When multiplying a whole number (or rational number) and an irrational number, the product is also an irrational number.
Therefore, the product of \( 35 \) and \( 3\pi \) will be:
an irrational number