Скачать или смотреть MSTC Refresher 27: Ying, Yang, Yung

27. A Yang, Ying and Yung is constructed by dividing a diameter of a circle, AB, into three equal parts by points C and D. Then describing on one side of AB semicircles having AC and AD as diameters, and on the other side of AB semicircles having BD and BC as diameters. What are the areas of Yang, Ying, and Yung if AB = 3 units?
A. 0.75pi, 0.50pi, 0.75pi C. 0.25pi, 0.25pi, 0.25 pi
B. 0.75pi, 0.75pi, 0.75pi D. 0.50pi, 0.50pi, 0.50pi

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