[" 42.If "2x-4y=9" and "6x-12y+7=0" are common "],[" tangents to a circle,then radius of the circle is "]

If 2 x-4 y=9 and 6 x-12 y+7=0 are common tangtnts to a circle, then radius of the circle is

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

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

If the lines 3x-4y+4=0 and 6x-8y-7=0 are tangents to a circle,then find the radius of the circle.

If the lines 3x-4y+4=0 and 6x-8y-7=0 are tangents to a circle,then find the radius of the circle.

The lines 3x-4y +4=0 and 6x-8y-7=0 are tangents to the same circle. The radius of the circle is

If the lines 3 x - 4y + 4 = 0 and 6x - 8y - 7 = 0 are tangents to a circle , then the radius of the circle is