圓周是多少 ??
回答 (5)
2009-02-13 12:25 am
✔ 最佳答案
38*圓周率=119.3805mm
2009-02-12 8:10 pm
圓周=2兀R 或 兀D
圓周=dX兀
=119.38mm(二位小數)
圓周=dX兀
=119.38mm(二位小數)
2009-02-12 8:03 pm
圓周 = 直徑 x 3.14
直徑38mm => 圓周 = 119.32mm
直徑38mm => 圓周 = 119.32mm
2009-02-12 8:02 pm
2r(半徑) = 直徑
圓周= 2r x 3.14
= 38 x 3.14
=119.32 mm
圓周= 2r x 3.14
= 38 x 3.14
=119.32 mm
收錄日期: 2021-04-13 16:25:48
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090212000051KK00457