Circle C is shown. Line segments A C and B C are radii. A line is drawn from point D on line A C to point E on line C B to form a line segment with length 5. The area above the line with length 5 is shaded. The length of D C is 3. Point F is on the outside of the shaded area. The radius of circle C is 6 units and the measure of central angle ACB is StartFraction pi Over 2 EndFraction radians.