中二數學(圓周)

2008-10-26 7:50 am
1)把一條長3m的綫彎成一個半圓,求半圓的半徑?
2)己知一正方形的邊長10cm,問正方形的外接圓的圓周?

回答 (1)

2008-10-26 8:41 am
✔ 最佳答案
The answer is as follows:

圖片參考:http://i277.photobucket.com/albums/kk75/uncle_michael/20081026_mat_1.jpg?t=1224952855


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