Answer:
3 and 11
Step-by-step explanation:
Given 2 sides with third side x , then
difference of 2 sides < x < sum of 2 sides , that is
7 - 4 < x < 7 + 4
3 < x < 11
Thus the possible values the third side cannot be are 3 and 11
 
        
             
        
        
        
Original equation is 
So,  and
 and

If we compare this equation with the given options, we can easily find that this matches with the last one  with P = p/2.
 with P = p/2.
Hence, correct option is  .
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