Given  Answer 
d = 12, find area  
d = 20, find circumference  
r = 9, find area  
r = 4, find area  
d = 30, find area  
d = 16, find circumference  
r = 27, find circumference  
d = 10, find circumference  
r = 5, find area  
d = 2, find circumference  
 Given  Answer 
r = 25, find area  
d = 14, find area  
r = 7, find circumference  
r = 1, find area  
r = 12, find circumference  
d = 6, find circumference  
r = 14, find area  
d = 1, find circumference  
d = 19, find circumference  
r = 17, find circumference  

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