解题方法
1 . 如图,在一个九等分的圆盘中随机取一点P,则点P取自阴影部分的概率为( )
![](https://img.xkw.com/dksih/QBM/2022/4/11/2955720318238720/2956123209203712/STEM/2a5856a9dfb749b5b1ac0dedf6a8c416.png?resizew=129)
![](https://img.xkw.com/dksih/QBM/2022/4/11/2955720318238720/2956123209203712/STEM/2a5856a9dfb749b5b1ac0dedf6a8c416.png?resizew=129)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
2 . 等边
中,
、
、
分别是
的中点,在
内随机取一点,则该点恰好在
内的概率为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/7f1ab581-0191-4598-94d5-f9ad5b077427.png?resizew=125)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2add0b4bf4b300829f8a260c299836bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/7f1ab581-0191-4598-94d5-f9ad5b077427.png?resizew=125)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次