1 . 某校开展社会实践活动,学生到工厂制作一批景观灯箱(如图,在直四棱柱上加工,所有顶点都在棱上),灯箱最上面是正方形,与之相邻的四个面都是全等的正三角形,灯箱底部是边长为a的正方形,灯箱的高度为10a,则该灯箱的体积为( )
![](https://img.xkw.com/dksih/QBM/2021/6/15/2743466688512000/2743648586948608/STEM/0f171b43e7864ee78b0c6ac6ca9aa2be.png?resizew=71)
![](https://img.xkw.com/dksih/QBM/2021/6/15/2743466688512000/2743648586948608/STEM/0f171b43e7864ee78b0c6ac6ca9aa2be.png?resizew=71)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 若矩形
满足
,则称这样的矩形为黄金矩形.现有如图1所示的黄金矩形卡片
,已知
,
,
是
的中点,
,
,且
,沿
,
剪开.用3张这样剪开的卡片,两两垂直地交叉拼接,得到如图2所示的几何模型.若连结这个几何模型的各个顶点,便得到一个正______ 面体;若
,则该正多面体的表面积为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939670cbfebb6bf5307a4eadacd67c36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d6e1e893190c067ca1ae6fef8a089e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b00267f95b3317244d9871a61dcb92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6cc3789c0e9b7d1226aa0de3327599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bced1780d1fd068d0242fa11c18ed5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53cc9caac0b40017cde9eb0d610e62aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/ece5fa59-801e-4e1b-bc59-4489812645dd.png?resizew=259)
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2021-05-07更新
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601次组卷
|
4卷引用:江苏省南通市2021届高三下学期5月第三次模拟考试数学试题