如图1,在矩形ABCD中,动点P从点A出发,以相同的速度,沿A→B→C→D→A方向运动到点A处停止.设点P运动的路程为x,△PAB的面积为y,如果y与x的函数图象如图2所示,则矩形ABCD的面积为( )
![](https://img.xkw.com/dksih/QBM/2020/4/24/2448088217296896/2448376839585792/STEM/708084843a2c42799264b1f41793b3f3.png?resizew=263)
![](https://img.xkw.com/dksih/QBM/2020/4/24/2448088217296896/2448376839585792/STEM/708084843a2c42799264b1f41793b3f3.png?resizew=263)
A.24 | B.40 | C.56 | D.60 |
2019·山西吕梁·三模 查看更多[1]
更新时间:2020-04-24 14:18:20
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【推荐1】如图①,菱形
的对角线相交于点
,
,点
为
的中点,点
为边
上的一个动点,连接
,过点
作
的垂线交
于点
,点
从点
出发匀速运动到点
,设
,
,
随
变化的图象如图②所示,图中
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/34f6ac6a-26bd-4ed5-8c63-6bc455853db3.png?resizew=316)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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A.![]() | B.3 | C.![]() | D.5 |
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【推荐2】矩形Ⅰ的面积为6,矩形Ⅱ中的三条边总长为6,则下列说法不正确的是( )
A.矩形Ⅰ中一组邻边的长满足反比例函数关系 |
B.矩形Ⅰ中一组邻边的长可能是3+![]() ![]() |
C.矩形Ⅰ的周长不可能是8 |
D.矩形Ⅱ的最大面积是3 |
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