圆柱底面半径是
,高是
,则此圆柱的侧面积是______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2713679aa5f12e1d89d3a3d98b65212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e62a0233031d4e5ecc0b60b51ac25ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85ccdc7aaa645c8bcc8978cda5479821.png)
更新时间:2020-03-05 16:36:41
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【知识点】 由展开图计算几何体的表面积解读
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