Answer:
a
Step-by-step explanation:
divide 9 and 6 each by 3 and bam you got a 2x3 poster
By the intersecting chords theorem, you have
11/21
1/3=7/21
1/7=3/21
(7+3)/21=10/21
21/21-10/21=11/21
Thus 11/21 of the circle is shaded.
11+3=14
-41-1=-42
14-2(-42)
-2(-42)
14+84
98
I hope this is good enough:
