已知△ABC的三个顶点A,B,C都在半径为5cm的圆o上,且AB=AC,BC=8cm,求△ABC的面积已知△ABC的三个顶点A、B、C都在半径为5cm的圆o上,且AB=AC,BC=8cm,求△ABC的面积
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![已知△ABC的三个顶点A,B,C都在半径为5cm的圆o上,且AB=AC,BC=8cm,求△ABC的面积已知△ABC的三个顶点A、B、C都在半径为5cm的圆o上,且AB=AC,BC=8cm,求△ABC的面积](/uploads/image/z/8607604-4-4.jpg?t=%E5%B7%B2%E7%9F%A5%E2%96%B3ABC%E7%9A%84%E4%B8%89%E4%B8%AA%E9%A1%B6%E7%82%B9A%2CB%2CC%E9%83%BD%E5%9C%A8%E5%8D%8A%E5%BE%84%E4%B8%BA5cm%E7%9A%84%E5%9C%86o%E4%B8%8A%2C%E4%B8%94AB%3DAC%2CBC%3D8cm%2C%E6%B1%82%E2%96%B3ABC%E7%9A%84%E9%9D%A2%E7%A7%AF%E5%B7%B2%E7%9F%A5%E2%96%B3ABC%E7%9A%84%E4%B8%89%E4%B8%AA%E9%A1%B6%E7%82%B9A%E3%80%81B%E3%80%81C%E9%83%BD%E5%9C%A8%E5%8D%8A%E5%BE%84%E4%B8%BA5cm%E7%9A%84%E5%9C%86o%E4%B8%8A%2C%E4%B8%94AB%3DAC%2CBC%3D8cm%2C%E6%B1%82%E2%96%B3ABC%E7%9A%84%E9%9D%A2%E7%A7%AF)
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