Answer: A=351.68 cm²
Step-by-step explanation:
To find the area of the shaded region, we would subtract the area of the circle by the area of the inner circle.
Area of Circle
[tex]A=\pi r^2[/tex]
[tex]A=\pi (11)^2[/tex]
[tex]A=121\pi[/tex]
Area of inner (white) circle
[tex]A=\pi r^2[/tex]
[tex]A=\pi (3)^2[/tex]
[tex]A=9\pi[/tex]
Now that we have the area to the circle and inner circle, we would subtract to find the area of the shaded region.
[tex]A=121\pi -9\pi[/tex]
[tex]A=112\pi[/tex]
[tex]A=351.68 cm^2[/tex]
