The figure shows a semicircle with centre O and radius 10 cm and angle
ABO = 50 degree. Find the area of the shaded region.
Figure: http://img641.imageshack.us/i/92331118.jpg/
Ans: 38.0 cm^2
F4 MathsTrigonometry
2010-04-27 6:06 am
回答 (1)
2010-04-27 6:18 am
收錄日期: 2021-04-23 20:40:36
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100426000051KK01655