题干

一个圆柱形水池底面直径是8米,池深3米,如果在水池的底面和周围抹上水泥,抹水泥的面积是多少平方米?修好后最多能盛水多少立方米?
上一题 下一题 0.0难度 选择题 更新时间:2018-03-25 10:37:56

答案(点此获取答案解析)

解:3.14×(8÷2)²+3.14×8×3
=3.14×16+3.14×24
=3.14×40
=125.6(平方米)
3.14×(8÷2)²×3
=3.14×48
=150.72(立方米)
答:抹水泥的面积是125.6平方米,修好后最多能盛水150.72立方米.

同类题2

假定你是中学生李华。在一位名叫TigerMom的学生家长的博客上,你看到如下内容。请你根据博客内容、写作要点和要求,给这位家长回复。

    I'm the mother of a fourteen-year-old. I have a rule for my daughter: be among the top 5 students or get punished in one way or another. She has been doing very well in school, but some friends of mine keep telling me that I put too much pressure on her. Am I wrong?

写作要点:

1)表明自己的看法;

2陈述自己的理由(可举例说明);

3)提出至少两条建议。

要求:1)短文词数100左右。

2)内容充实,结构完整,语意连贯。

Hi, TigerMom,

    What puzzles you is actually a puzzle for many parents in China. My idea is



                                                                                                                                                                                                 Yours
                                                                                                                                                                                                  LiHua