如图,有一直角三角形的铁皮ABC,
AC=3,BC=4,若利用此三角形铁皮剪出一圆形铁片,则剪出圆形铁片面积的最大值是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143d14f5ef0c6f03dbd9f0eca175a7d5.png)
更新时间:2022-05-06 15:21:43
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【推荐1】如图,
分别与
相切于点
,
的切线
分别交
于点
,切点
在
上,若
的周长为
,则
的长是________________
.
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【推荐2】如图,△ABC的内切圆⊙O与BC,CA,AB分别相切于点D,E,F.且AB=8,AC=15,BC=17,则⊙O的半径是________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/24/20e234e3-b52f-46f2-90d5-cdceefe2f6d4.png?resizew=157)
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【推荐1】△ABC中,AB=AC=10,BC=12,则△ABC的内切圆的半径长为_________ .
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