鞋匠刀形是一种特殊的图形,古希腊数学家阿基米德发现该图形有许多优美的性质.如图,若点C为线段
的三等分点且
,分别以线段
,
,
为直径且在
同侧作半圆,则这三个半圆周所围成的图形称为鞋匠刀形(即图中阴影部分).现等可能地从以
为直径的半圆内任取一点,则该点落在鞋匠刀形内的概率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8c563906d6d25078fd5d96abe96194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/1e626893-c702-4a69-adec-103bcc9308f5.png?resizew=134)
2020·安徽安庆·二模 查看更多[3]
2020届安徽省安庆市高三第二次模拟理科数学试题(已下线)黄金卷17-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(江苏专用)四川省广元中学2022-2023学年高二下学期第一次段考数学(理)试题
更新时间:2020-05-09 23:25:07
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【推荐1】某同学动手做实验:《用随机模拟的方法估计圆周率的值》,在左下图的正方形中随机撒豆子,每个豆子落在正方形内任何一点是等可能的,若他随机地撒50粒统计得到落在圆内的豆子数为39粒,则由此估计出的圆周率
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【推荐2】已知长轴长为
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