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SAT I 每日一问:2013年3月15日

沪江英语 2013-03-15 10:30
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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?     

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