Need help this is math keep in mind this is round your answer to the nearest 10

Answer:
The amount of acid in the solution will be: 55.4 millimeters
Step-by-step explanation:
The total amount of solution of acid and water = 342 milimeters
The percentage of acid included in the solution = 16.2%
The amount of acid in the solution:
[tex]16.2\%\:\times 342[/tex]
[tex]=\frac{16.2}{100}\times \:342[/tex]
[tex]=\frac{162}{1000}\times \:342[/tex]
[tex]=0.162\times \:342[/tex]
[tex]=55.4[/tex] millimeters
Thus, the amount of acid in the solution will be: 55.4 millimeters