如图,在一个圆锥中,D为圆锥的顶点,O为圆锥底面圆的圆心,P为线段DO的中点,AE为底面圆的直径,△ABC是底面圆的内接正三角形,
,则下列说法正确的是___________ .(填序号)
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987895386898432/2989966502117376/STEM/40330c97-16b2-49cb-8a0c-b28404a5bace.png?resizew=219)
①此圆锥的体积为
;
②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
平面PAC;
③PA⊥平面PBC;
④在圆锥侧面上,点A到DB中点的最短距离为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ea4bd288944d3ba3d6a319de869dce.png)
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987895386898432/2989966502117376/STEM/40330c97-16b2-49cb-8a0c-b28404a5bace.png?resizew=219)
①此圆锥的体积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef43297048597d1a77b729246a56e076.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
③PA⊥平面PBC;
④在圆锥侧面上,点A到DB中点的最短距离为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
更新时间:2022-05-29 18:45:19
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