https://padlet.com/1298subjectteacher/j2u3areaofcircle 圆的面积可以从长方形面积得到。 en-us 2021-08-11 01:43:20 UTC 2025-05-24 15:39:47 UTC hello@padlet.com https://padlet.net/icons/png/1f535.png 1298subjectteacher https://padlet.com/1298subjectteacher/j2u3areaofcircle/wish/1674833977 2021-08-11 01:58:52 UTC https://padlet.com/1298subjectteacher/j2u3areaofcircle/wish/1674833977 20212student https://padlet.com/1298subjectteacher/j2u3areaofcircle/wish/1674835718 2021-08-11 02:00:50 UTC https://padlet.com/1298subjectteacher/j2u3areaofcircle/wish/1674835718 20062student https://padlet.com/1298subjectteacher/j2u3areaofcircle/wish/1674835875 方靖昕 5 J2U3

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