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如图示,有一个边长的1的正十二边形,以其每一条边为边向内作正三角形,从而形成图中的阴影部分.请你运用剪拼的方法巧妙求出阴影的面积.
As shown in the figure, there is a regular 12-sided polygon with 1 edge and an inward triangle with each side of the polygon, thus forming the shaded area in the figure. area.