1 / 11

圆的面积

圆的面积. 圆的面积. 能否将圆转化成我们以前学过的图形呢？. 怎样计算圆的面积呢？. 4. 5. 1. 2. 3. 6. 7. 8. 12. 11. 16. 15. 14. 13. 10. 9. 实验. 4. 5. 1. 2. 3. 6. 7. 8. 12. 11. 16. 15. 14. 13. 10. 9. 4. 5. 1. 2. 3. 6. 7. 8. 12. 11. 16. 15. 14. 13. 10. 9.

lillith-harrington
Download Presentation

圆的面积

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 圆的面积 圆的面积

  2. 能否将圆转化成我们以前学过的图形呢？ 怎样计算圆的面积呢？

  3. 4 5 1 2 3 6 7 8 12 11 16 15 14 13 10 9 实验

  4. 4 5 1 2 3 6 7 8 12 11 16 15 14 13 10 9

  5. 4 5 1 2 3 6 7 8 12 11 16 15 14 13 10 9

  6. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 8 9 7 10 11 6 12 5 4 13 14 3 15 2 16 1 17 32 31 18 30 19 29 20 28 21 27 22 26 23 25 24 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

  7. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 8 8 9 9 7 7 10 10 11 11 6 6 12 12 5 5 4 4 13 13 14 14 3 3 15 15 2 2 16 16 1 1 17 17 32 32 31 31 18 18 30 30 19 19 29 29 20 20 28 28 21 21 27 27 22 22 26 26 23 23 25 25 24 24 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

  8. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 8 8 9 9 7 7 10 10 11 11 6 6 12 12 5 5 4 4 13 13 14 14 3 3 15 15 2 2 16 16 1 1 17 17 32 32 31 31 18 18 30 30 19 19 29 29 20 20 28 28 21 21 27 27 22 22 26 26 23 23 25 25 24 24 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

  9. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 r r 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 S = r2 问题1：转化后长方形的长相当于圆的什么？ 宽相当于圆的什么？ 长方形的面积=长×宽 × × 圆的面积=

  10. 桓台县实验学校 成娜 谢谢！再见！ 桓台县实验学校 成娜

More Related