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赵市中心小学 陈亚

圆的周长. 赵市中心小学 陈亚. 车轮各转动一周, 哪种车行的路程比较长?. ︽ 周髀算经 ︾. 周三径一. 用“ 割圆术 ”来求圆周长的近似值。计算得出圆周率是 3.14 。. 刘徽. 练一练:. 1 、求下面各圆的周长。. ( 2 ) r=1.2 分米. 2 、摩天轮的半径是 10 米,坐着它转动一周,大约在空中转过多少米?. 4 、陈老师喜欢晨跑,每次走到一个半圆形的花坛旁,他都要绕着跑一圈,你知道他跑了多少米吗?.

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赵市中心小学 陈亚

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  1. 圆的周长 赵市中心小学 陈亚

  2. 车轮各转动一周, 哪种车行的路程比较长?

  3. ︽周髀算经︾ 周三径一

  4. 用“割圆术”来求圆周长的近似值。计算得出圆周率是3.14。用“割圆术”来求圆周长的近似值。计算得出圆周率是3.14。 刘徽

  5. 练一练: 1、求下面各圆的周长。 (2)r=1.2分米

  6. 2、摩天轮的半径是10米,坐着它转动一周,大约在空中转过多少米?2、摩天轮的半径是10米,坐着它转动一周,大约在空中转过多少米?

  7. 4、陈老师喜欢晨跑,每次走到一个半圆形的花坛旁,他都要绕着跑一圈,你知道他跑了多少米吗?4、陈老师喜欢晨跑,每次走到一个半圆形的花坛旁,他都要绕着跑一圈,你知道他跑了多少米吗?

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