Multiply 12.57 by 4.11. round your answer to the nearest hundredth.
a. 51.25
b. 51.66
c. 49.45
d. 52.66

When you are going to multiply 12.57 by 4.11, the result would be 51.6627.

To round off the result to the nearest hundredth, it would become 51.66.

According to the rules of rounding off a number, if the number after the rounded off digit is more than or equal to 5, you have to add 1 to the rounded off digit. But if it is less than 5, then the rounded off digit would be still the same. In this case, the rounded off digit which is 6 would still be the same since the number after that is 2 which is less than 5. 
So, the answer is letter B which is 51.66