某小区有一块边长为
的正方形场地,规划修建两条宽为
的绿化带(如图中阴影部分所示).方案一如图甲所示,绿化带面积为
;方案二如图乙所示,绿化带面积为
.设
,则
的取值范围为( )
![](https://img.xkw.com/dksih/QBM/2021/1/8/2631701977653248/2634364548472832/STEM/ccb5d0af-441f-4a66-809b-872ea430b715.png?resizew=355)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a7f1f4dcfb07b129fbdfcefa6533cbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a742fda701b36d75794aab51f59bfa19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425a4dcc8f29bddeb1afe2f3d06db408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://img.xkw.com/dksih/QBM/2021/1/8/2631701977653248/2634364548472832/STEM/ccb5d0af-441f-4a66-809b-872ea430b715.png?resizew=355)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2021-01-12 08:51:18
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