Answer:
The measure of the third side is 
Step-by-step explanation:
we know that
Applying the law of cosines

where
C is the angle between side a and side b
we have

substitute





0.7(3s+4)-1.1s=7.9 equals s=5.1
Answer:
it would be 2.8150
Step-by-step explanation:
since there is a one in the tenths place it rounds down to 0 with makes it 50