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In the figure shown, the small circle is tangent to the large circle and passes through the center O of the large circle. If the area of the shaded region is 1, what is the diameter of the small circle?
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· 相关考点
4.5.4 圆相关不规则图形的面积
4.5.4 圆相关不规则图形的面积
以上解析由 考满分老师提供。