解题方法
1 . 某几何体的正视图和侧视图如图所示,它的俯视图的直观图是
,其中
,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/1b05828c-8c8d-431e-9ff9-b28bebf35b9b.png?resizew=387)
(1)画出该几何体的直观图;
(2)求底面三角形的面积,及立体图形的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1264a2e3609e1c274acb89b5ea5019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade16bc644597fe5bc4bf05792cd84d7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/1b05828c-8c8d-431e-9ff9-b28bebf35b9b.png?resizew=387)
(1)画出该几何体的直观图;
(2)求底面三角形的面积,及立体图形的体积.
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解题方法
2 . 如图,在长方体
中,
,
,
,点E、F分别在
、
上,
,过点E、F的平面
与此长方体的面相交,交线围成一个正方形.
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962989292355584/2964401417011200/STEM/7d7dce912f174dffa0963544f297fe09.png?resizew=238)
(1)在图中画出这个正方形(不必说明画法与理由);
(2)求平面
把该长方体分成的两部分体积的比值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f3ddc1c05906d037a3fd793e1c4ab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c122ca7141c43c15c783968f5f0dbc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbafedc202bd0d86c4dfdece9f8f4fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9d327f45c7913c4d866da4db5ce1b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962989292355584/2964401417011200/STEM/7d7dce912f174dffa0963544f297fe09.png?resizew=238)
(1)在图中画出这个正方形(不必说明画法与理由);
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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3 . 已知梯形ABCD,按照斜二测画法画出它的直观图
,如图,其中
,
,
.求:
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962990456627200/2964284748996608/STEM/691be121-de81-4543-9585-cd2037d364c1.png?resizew=163)
(1)梯形ABCD的面积;
(2)梯形ABCD以BC为旋转轴旋转一周形成的几何体的表面积和体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d609847e2ff3d64e5a514582c3ead0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9598c8022d6da9d9a29615210053432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b353a6132774247916822e359377556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edde249778f2496c94ffa0ec13300b3c.png)
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962990456627200/2964284748996608/STEM/691be121-de81-4543-9585-cd2037d364c1.png?resizew=163)
(1)梯形ABCD的面积;
(2)梯形ABCD以BC为旋转轴旋转一周形成的几何体的表面积和体积.
您最近一年使用:0次
2022-04-23更新
|
537次组卷
|
2卷引用:沪教版(2020) 必修第三册 同步跟踪练习 第11章 11.3.2 旋转体
解题方法
4 . 某几何体的三视图如图所示,
![](https://img.xkw.com/dksih/QBM/2020/10/27/2580077032292352/2580647810277376/STEM/7867369d-eee0-4527-9daa-6c3b53828faf.png?resizew=230)
(1)画出该几何体的直观图;
(2)求该几何体的表面积和体积.
![](https://img.xkw.com/dksih/QBM/2020/10/27/2580077032292352/2580647810277376/STEM/7867369d-eee0-4527-9daa-6c3b53828faf.png?resizew=230)
(1)画出该几何体的直观图;
(2)求该几何体的表面积和体积.
您最近一年使用:0次