A line touches a circle of radius 6 cm. Another line is drawn which is tangent to the circle. If the two lines are parallel, then the distance between them is:

6 cm 12 cm 8 cm 10 cm

12 cm

Let MN and PQ are two parallel lines AO = OB = r = 6 cm AB = AO + OB = 6 + 6 = 12 cm Therefore, answer is 12 cm.