问题
填空题
一个圆柱体的侧面展开图是一个正方形，已知它的一个底面圆面积是5平方厘米，这个圆柱的表面积是（ ）平方厘米。
答案
72.8
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一个圆柱体的侧面展开图是一个正方形，已知它的一个底面圆面积是5平方厘米，这个圆柱的表面积是（ ）平方厘米。
72.8
| Paul和Jenny正在制作课程表,请阅读下面的对话，完成文后的表格。 Paul: We must give each subject enough (足够的) periods (课时). Our English lessons are really interesting. I'd like to have them every day. So what about having an English lesson on Tuesday, the first period? Jenny: OK. My favourite subject is math. I'd like to have two periods after the recess (课间休息) on Monday. Paul: What about those boring social subjects? We'd better not have two periods of them. Jenny: Well. Put geography (地理) on Monday, the third period; history (历史) on Wednesday, the fifth period; biology (生物) on Thursday, the period before lunch and P.E. on Friday, the period before the recess. Paul: Oh, I forget the Chinese lessons. Can we put them before recess on Tuesday? Jenny: OK. The science (科学) lesson should be on Friday before lunch. Is everything done?
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