P URGENT I've got a timer going on but really need your help to answer this thank you!!

Given:

The radius of inner circle = 13 yd.

The width of the shaded region = 8 yd

To find the area of the shaded region.

Now,

The radius of the outer circle = 13+8 yd = 21 yd

Formula

The area of a circle of radius r unit is sq unit.

where, = The area of the shaded region

= Area of the outer region

= Area of the inner region

Now,

sq yd

And,

sq yd

Therefore,

sq yd

sq yd

Hence,

The area of the shaded region 854.08 sq yd.

answer: i'm not sure

step-by-step explanation: