A circle with a shaded sector has a circumference of 12 pi millimeters. What is the area of the shaded sector? Express the answer in terms of Pi. A circle. The shaded sector has an angle measure of 80 degrees. The circumference is 12 pi millimeters.

Recall that Area of a sector = StartFraction n degrees over 360 degrees EndFraction (pi) (r squared).
2 pi millimeters squared
8 pi millimeters squared
32 pi millimeters squared
36 pi millimeters squared