Answer:
Length of third side is: 
Step-by-step explanation:
Perimeter of triangle = 
Length of side 1= 
Length of side 2= 
We need to find length of third side.
The formula used is: 
Putting values and finding length of third side.

So, Length of third side is: 
Is this question correct? is it thousand or thousandth? and does the comma signify a decimal point?
8/4 should work, because the numerator's higher than the denominator.
Answer: C 6 cm
Sorry if I’m wrong