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13问答网 > 一个圆柱体的侧面积是24.5平方米，已知它的底面半径和高相等，则它的的表面积是（）

一个圆柱体的侧面积是24.5平方米，已知它的底面半径和高相等，则它的的表面积是（）

2025-03-15 17:11:25

推荐回答（2个）

回答1：

r=h，S柱=S侧+2S底，
S侧=CH=2πr*r(r=h)=2*πr�0�5=24.5。那么，πr�0�5（S底）=24.5/2=12.25m�0�5。
12.25*2=24.5m�0�5。所以，24.5+24.5=49m�0�5。
==不大确定，如果正确啦，拜托采纳啦。（我也在写这道题，刚刚想出来）= =、、

回答2：

最后的49

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