SAT I 每日一问:2013年3月15日
Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
In the figure above, a shaded circle with diameter is tangent to a large semicircle with diameter at points and . Point is the center of the semicircle, and is perpendicular to . If the area of the large semicircle is , what is the area of the shaded circle?