Answer:
The identity property
Step-by-step explanation:
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Use Pi, 3.14.  Divide the Diameter by 3.14 and you should get your answer.  That's all I know.
 
 
        
        
        
Answer:
choose A 
Step-by-step explanation:
f6odo6d7pfp7dp6d6p
 
        
             
        
        
        
Answer:
50	27.5
50.01	27.5055
50.02	27.511
50.03	27.5165
Step-by-step explanation: