求下列图形阴影部分的面积.
![](https://img.xkw.com/dksih/QBM/2018/1/15/1863581017071616/1863581017317376/STEM/65095e3ebfa84d7281ca543d476233e0.png)
![](https://img.xkw.com/dksih/QBM/2018/1/15/1863581017071616/1863581017317376/STEM/65095e3ebfa84d7281ca543d476233e0.png)
![](https://img.xkw.com/dksih/QBM/2018/1/15/1863581017071616/1863581017317376/STEM/b2042566464841b8aefa4c9aefd010c3.png)
更新时间:2018-01-19 08:48:11
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适中
(0.65)
【推荐2】求下列图中阴影部分的面积.(单位:dm)
(1)
![](https://img.xkw.com/dksih/QBM/2017/12/15/1856045439541248/1856045439778816/STEM/59ad3cfe8dbd468c8bf97e018599b726.png)
(2)
![](https://img.xkw.com/dksih/QBM/2017/12/15/1856045439541248/1856045439778816/STEM/29162958ce8a4e049134c8b8890ccc12.png)
(3)
(1)
![](https://img.xkw.com/dksih/QBM/2017/12/15/1856045439541248/1856045439778816/STEM/59ad3cfe8dbd468c8bf97e018599b726.png)
(2)
![](https://img.xkw.com/dksih/QBM/2017/12/15/1856045439541248/1856045439778816/STEM/29162958ce8a4e049134c8b8890ccc12.png)
(3)
![](https://img.xkw.com/dksih/QBM/2017/12/15/1856045439541248/1856045439778816/STEM/a2a1ea98ffb64d188ec29201e02cf5df.png)
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