Answer:-
.
Solution:- It is correct that mili means a thousandth that is
part. We have been given with 1939 mililiters and asked to convert it to liters and round the answer to the nearest tenth of a liter. We do this conversion by using dimensional analysis, a good of showing unit conversions. The set is as shown below:

=

Now, we round this to the nearest tenth and it becomes
.
So, 1939 mililiters equals to 2.0 liters.