Answer:
197.9
Step-by-step explanation:
find the area of the large circle and subtract the area of the small circle
area of a circle = [tex]\pi[/tex][tex]r^{2}[/tex]
area of large circle = 144[tex]\pi[/tex]
area of small circle = 81[tex]\pi[/tex]
area of shaded region = 63[tex]\pi[/tex]
which is equal to about 197.9
