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If $2 x - 4 y = 9$ and $6 x - 12 y + 7 = 0$ are parallel tangents to circle, then radius of the circle, is

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Correct option is B

The equations of two tangents are 2x−4y−9=1 and 6x-12y+7=0. Clearly, these are parallel. The distance between these lines is −9−74+16=1735 Using :d=c1−c2a2+b2∴ Radius of the circle =12×1735=1765

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If 2x−4y=9 and 6x−12y+7=0 are parallel tangents to circle, then radius of the circle, is

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If $2 x - 4 y = 9$ and $6 x - 12 y + 7 = 0$ are parallel tangents to circle, then radius of the circle, is