To find the result of multiplying 2.49 by 0.17, you would perform the following calculation:
\[ 2.49 \times 0.17 = 0.4233 \]
Now, rounding this result to 2 decimal places, we look at the third decimal place (which is 3):
- The second decimal place is 2.
- Since the third decimal place (3) is less than 5, we do not round up.
Therefore, the result rounded to 2 decimal places is:
\[ 0.42 \]