Consider two concentric circles C1:x2+y2−4=0 and C2:x2+y2−9=0. A parabola is drawn through the points where C1 meets y−axis and having an arbitrary tangent of C2 as its directrix. If C is the curve of locus of focus of drawn parabola and e is the eccentricity of the curve C, then the value of 12e is

Consider two concentric circles C1:x2+y2−4=0 and C2:x2+y2−9=0. A p

1.	Consider two concentric circles C1:x2+y2−4=0 and C2:x2+y2−9=0. A parabola is drawn through the points where C1 meets y−axis and having an arbitrary tangent of C2 as its directrix. If C is the curve of locus of focus of drawn parabola and e is the eccentricity of the curve C, then the value of 12e is
Answer» Consider two concentric circles $C_{1} : x^{2} + y^{2} - 4 = 0$ and $C_{2} : x^{2} + y^{2} - 9 = 0.$ A parabola is drawn through the points where $C_{1}$ meets $y -$ axis and having an arbitrary tangent of $C_{2}$ as its directrix. If $C$ is the curve of locus of focus of drawn parabola and $e$ is the eccentricity of the curve $C,$ then the value of $12 e$ is