Answer: 18.26
Explanation:
When you multiply 3.521 and 5.1856 you get the answer 18.2584976.
If you round this to the nearest hundredths place that means you are rounding it to two decimal places after the decimal point (5)
The rule with rounding is if the number before the place you are rounding to (8) is 5 or bigger, you round up. And if it is 4 or smaller you round down.
So,
In this case you are going to round up (Because 8 is greater than 5)!
In conclusion,
The answer to this problem is 18.26!