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A circle is drawn through the extremities of the latus rectum of the parabola y2=20x. If the circle touches the directrix of the parabola, then the radius of the circle is(units)

Answer» A circle is drawn through the extremities of the latus rectum of the parabola y2=20x. If the circle touches the directrix of the parabola, then the radius of the circle is(units)


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