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2014-10-25T10:25:19+05:30

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So radius = r = 14 cm
so circumference = 2πr = (2 × 22 × 14)/7
                                   = 88 cm
so diameter = 2r= 2 × 14 = 28 cm

so ratio = 88 : 28
            = 22 : 7

Similarly, 

circumference = 2πr = 2r × π
              Diameter = 2r
Ratio =  2r × π : 2r    
Cancelling the 2r

Ratio = π : 1 = 22 : 7
1 5 1
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so plz provide me the link
2014-10-25T20:12:20+05:30
Ratio of circumference and diameter is = 2πr : 2r
                                                       = 2πr/2r
                                                       = π
                                                       = 22/7    
                                                       = 22 : 7
note:the value of π is not exactly equal to 22/7
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