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If 2x-4y=9and6x-12y+7=0 are common tange...

If `2x-4y=9and6x-12y+7=0` are common tangents to a circle , then radius of the circle is

A

`(sqrt3)/(5)`

B

`(17)/(6 sqrt5)`

C

`(2 sqrt5)/(3)`

D

`(17)/(3 sqrt5)`

Text Solution

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The correct Answer is:
B
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