if rotate about x=3....what is volume
更新1:
http://imageshack.us/photo/my-images/692/13466054.png/
http://imageshack.us/photo/my-images/692/13466054.png/
收錄日期: 2021-04-30 16:51:38
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120712000051KK00863