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In triangle ABC, a : b : c = 4 : 5 : 6. ...

In triangle ABC, `a : b : c = 4 : 5 : 6`. Then find the ratio of the radius of the circumcircle to that of the incircle

A

`16//7`

B

`7//16`

C

`15//7`

D

`7//15`

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The correct Answer is:
A
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