为了节省材料,某工厂以岸堤
(岸堤足够长)为一边,用总长为80米的材料围成一个由三块面积相等的小长方形组成的长方形
区域(如图),若
米,则给出下列四个结论:①
米,②
;③
;④长方形
的最大面积为300平方米,其中,正确的是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7bc63210bcec988e7ba5cb3e8663bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7d1957dabbcedb7ed2d612f8a7b4d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee498e34b21dea01638f5c6adccb3561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8408cdf53667cef5c76fb3a2cec99e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
更新时间:2024-04-22 16:11:24
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【推荐2】(1)下列代数式:①
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b4ef106431b30ee09d6a11533928b4f.png)
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【推荐1】如图所示,设长方体底面是边长为
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【推荐2】将二次函数
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【推荐3】下图是由边长为1个单位长度的小正方形组成的网格,线段AB的端点在格点上.
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