若直角三角形的两边长分别是方程
的两根,则该直角三角形的面积是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e83a0c9561ef92dfa84e027529e0d3c.png)
A.48 | B.24 | C.48或![]() | D.24或![]() |
更新时间:2022-11-16 17:47:11
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【推荐1】如图,阴影部分是一个半圆,则这个半圆的面积是( )
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/509b4bd7-724d-405e-85da-f20b2e3f7cfe.png?resizew=136)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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单选题
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较易
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【推荐2】如图,
,以
的三边为边向外作正方形,其面积分别为
,
,
,且
,
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为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/12/e924af4b-7448-4d84-b8e8-6420de1c7500.png?resizew=112)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
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A.3 | B.4 | C.5 | D.9 |
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