两道有关圆的题目1、三角形三边长分别为5cm,12cm,13cm,以三角形三个顶点为圆心的三个圆两两相切,求此三个圆的半径.2、三角形ABC的面积为4平方厘米,周长为10厘米,求三角形的内切圆半径过程
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![两道有关圆的题目1、三角形三边长分别为5cm,12cm,13cm,以三角形三个顶点为圆心的三个圆两两相切,求此三个圆的半径.2、三角形ABC的面积为4平方厘米,周长为10厘米,求三角形的内切圆半径过程](/uploads/image/z/3701388-12-8.jpg?t=%E4%B8%A4%E9%81%93%E6%9C%89%E5%85%B3%E5%9C%86%E7%9A%84%E9%A2%98%E7%9B%AE1%E3%80%81%E4%B8%89%E8%A7%92%E5%BD%A2%E4%B8%89%E8%BE%B9%E9%95%BF%E5%88%86%E5%88%AB%E4%B8%BA5cm%2C12cm%2C13cm%2C%E4%BB%A5%E4%B8%89%E8%A7%92%E5%BD%A2%E4%B8%89%E4%B8%AA%E9%A1%B6%E7%82%B9%E4%B8%BA%E5%9C%86%E5%BF%83%E7%9A%84%E4%B8%89%E4%B8%AA%E5%9C%86%E4%B8%A4%E4%B8%A4%E7%9B%B8%E5%88%87%2C%E6%B1%82%E6%AD%A4%E4%B8%89%E4%B8%AA%E5%9C%86%E7%9A%84%E5%8D%8A%E5%BE%84.2%E3%80%81%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E9%9D%A2%E7%A7%AF%E4%B8%BA4%E5%B9%B3%E6%96%B9%E5%8E%98%E7%B1%B3%2C%E5%91%A8%E9%95%BF%E4%B8%BA10%E5%8E%98%E7%B1%B3%2C%E6%B1%82%E4%B8%89%E8%A7%92%E5%BD%A2%E7%9A%84%E5%86%85%E5%88%87%E5%9C%86%E5%8D%8A%E5%BE%84%E8%BF%87%E7%A8%8B)
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