Assuming you have some angle measures, you could use the
Law of Sines to solve for the missing side lengths, which states that,

,
where a, b, and c correspond to the given sides you have, and A, B, and C represent the angles you have.
In this scenario, you would have to have the values for c (which we do), and have the angle measure of C. In addition, we would also need an angle measure that is either A or B.
Hope this helps a bit!
:)
The answer will most likely be 56 degrees try that it should be the answer!
Answer:
a) =6m
b) =18np
Step-by-step explanation:
a)5m-m-m+3m=6m
b)3*6=18np