求图片中圆形图形中的阴影面积？---**Question Stem:** In the following figure O is the center of circle, find the area of the shaded part. **Chart/Diagram Description:** * **Type:** Geometric figure, specifically a circle with an inscribed right-angled triangle and a shaded segment. * **Main Elements:** * A large circle with its center labeled 'O'. * Two radii are drawn from the center O to points on the circle's circumference. One radius extends vertically upwards from O, and the other extends horizontally to the right from O. * A right angle symbol is shown at the center O, indicating that the two radii form a 90-degree angle. * The vertical radius is labeled with the number '8', indicating its length. Since this is a radius, the horizontal radius also has a length of 8. * A straight line (hypotenuse of the triangle) connects the two points on the circumference where the radii terminate. This forms a right-angled triangle with vertices at O and the two points on the circumference. * The region of the circle bounded by the arc connecting the two points on the circumference and the straight line connecting these two points (the chord) is partially shaded. This shaded region is a circular segment. **Options:** A) 16 - 32π B) 16π - 32 C) 32π D) 16π