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If the straight lines x-4y + 7=0 and 3x ...

If the straight lines `x-4y + 7=0` and `3x - 12y + 11 =0`
are tangents to a circle. Then, the radius of the circle is

A

`(10)/( 3 sqrt17)`

B

`(5)/( 3 sqrt7)`

C

`(15)/( sqrt17)`

D

`(5)/( 3 sqrt17)`

Text Solution

Verified by Experts

The correct Answer is:
D
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