Hello from MrBillDoesMath!
Answer:
Choice B.
Discussion:
Today is your lucky day because I know the answer ! );
A circle has 360 degrees. A circle also has an area of Pi * r^2
The arc shown, 120 degrees, is 1/3 of a circle, so the area of the sector is 1/3 the area of the full circle. In other words, the area of the sector is
(1/3) ( Pi * r^2) =
(1/3) ( Pi * 6^2) =
(1/3) ( 36 *Pi ) =
12 Pi
That's Choice B
Thank you,
MrB