The largest is 17.08
thank me later :)
        
             
        
        
        
The fraction 22/7 has a value of 3.142857, so it has the same first three digits as pi. Both 3.14 and 22/7 are approximations of pi. In fact, 22/7 is close to pi than 3.14 is. Pi is irrational. That is, the decimal expansion never ends and never repeats, so any number of decimal places we wrote out is an approximation. The approximation 3.14 is about 1/2 percent off from the true value, and the fairly well know 3.141559 is within 0.000084 percent.
        
             
        
        
        
Step-by-step explanation:
is this a quadrilateral? or polygon or triangle? 
what are the angles (I believe there should be at least an angle given) else PC can be any value that is positive
 
        
             
        
        
        
The answer is A; 1/2. You add 1 1/2 and 1 1/2 together to get 3. Then you subtract 3 1/2 and 3 to get your answer 1/2. I hope that helps!