### Tangent Chord to Concentric Circles: Chord is a tangent to the smaller of two concentric circles.

A http://www.door2math.com production. Dr. Pan makes learning math Fun. Chord AB, 48 cm long, is a tangent to the smaller of two concentric cirlces. If the radius of the small circle is 10 cm, find the radius of the large circle.

Length:
02:01