The diameter of the outer ring will be 4 inches since it extends one inch beyond the bull's eye from either side. See the attached image for clarification.
The area of the outer ring can be expressed as:
This is because we need to take into account of the space taken up by the bullseye.
Now we set up our equation:
Now plug and solve:
The area of the outer ring can be expressed as:
This is because we need to take into account of the space taken up by the bullseye.
Now we set up our equation:
Now plug and solve: