A circle has area 154 square units. Its diameters have equations 2x – 3y + 12 = 0 and x + 4y – 5 = 0. Then the radius of the circle is

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A circle has area 154 square units. Its diameters have equations 2x – 3y + 12 = 0 and x + 4y – 5 = 0. Then the radius of the circle is