Science questions!!
2007-12-20 7:52 pm
How to measure the diametre of a thin wire???(plaese answer completly and claerly)
回答 (1)
2007-12-20 8:26 pm
✔ 最佳答案
可唔可以度圓周, 再計呀??圓周 = 2 ┬┬ r
diametre = 圓周/ 3.14 (┬┬)
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https://hk.answers.yahoo.com/question/index?qid=20071220000051KK00889