Question 607213
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 {{{pi *R^2 = 36 pi}}}

The area of the smaller circle (radius 4) is {{{pi *R^2 = 16 pi}}}

The shaded area is the difference: {{{36 pi - 16 pi = 20 pi}}}
...
The ratio of shaded portion to small circle is {{{20 pi / 16 pi = 20/16 =1.25}}}