设计一个商标图形在三角型ABC中AB=AC=2cm角ABC=30度,以A为圆心.AB为半径做弧BEC,以BC为直径做半圆BFCABC中AB=AC=2cm角ABC=30度,以A为圆心.AB为半径做弧BEC,以BC为直径做半圆BFC则阴影部分的面积等于多少
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![设计一个商标图形在三角型ABC中AB=AC=2cm角ABC=30度,以A为圆心.AB为半径做弧BEC,以BC为直径做半圆BFCABC中AB=AC=2cm角ABC=30度,以A为圆心.AB为半径做弧BEC,以BC为直径做半圆BFC则阴影部分的面积等于多少](/uploads/image/z/3790021-13-1.jpg?t=%E8%AE%BE%E8%AE%A1%E4%B8%80%E4%B8%AA%E5%95%86%E6%A0%87%E5%9B%BE%E5%BD%A2%E5%9C%A8%E4%B8%89%E8%A7%92%E5%9E%8BABC%E4%B8%ADAB%3DAC%3D2cm%E8%A7%92ABC%3D30%E5%BA%A6%2C%E4%BB%A5A%E4%B8%BA%E5%9C%86%E5%BF%83.AB%E4%B8%BA%E5%8D%8A%E5%BE%84%E5%81%9A%E5%BC%A7BEC%2C%E4%BB%A5BC%E4%B8%BA%E7%9B%B4%E5%BE%84%E5%81%9A%E5%8D%8A%E5%9C%86BFCABC%E4%B8%ADAB%3DAC%3D2cm%E8%A7%92ABC%3D30%E5%BA%A6%2C%E4%BB%A5A%E4%B8%BA%E5%9C%86%E5%BF%83.AB%E4%B8%BA%E5%8D%8A%E5%BE%84%E5%81%9A%E5%BC%A7BEC%2C%E4%BB%A5BC%E4%B8%BA%E7%9B%B4%E5%BE%84%E5%81%9A%E5%8D%8A%E5%9C%86BFC%E5%88%99%E9%98%B4%E5%BD%B1%E9%83%A8%E5%88%86%E7%9A%84%E9%9D%A2%E7%A7%AF%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91)
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