There are two parallel chords of length 8 cm and 6 cm. The distance between center and shortest chord (6cm chord) is 4cm. So, the perpendicular distance from the center to the shortest chord is 4cm. The perpendicular line from center to chord divides chord into two equal parts. So, the radius of circle is 32+42=5. Since the radius is 5. The distance from center to largest chord is 52−42=3.