SOLUTION: in circle O, OB=6 and AB=2. the ratio of the shaded portion to the small circle=?

Question 607213: in circle O, OB=6 and AB=2. the ratio of the shaded portion to the small circle=?
Answer by LisaJ(11) (Show Source): You can put this solution on YOUR website!
We need a little more information. Where are A and B in the picture?
Is B on the larger circle and A on the smaller circle?
Is the shaded portion the donut-shaped area between A and B?
IF SO, then the area of the larger circle (radius 6) is
The area of the smaller circle (radius 4) is
The shaded area is the difference:
...
The ratio of shaded portion to small circle is
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