Geometry
最近有人在學生中心的廁所的黑板上寫下了一堆geometry的題目，想必是讀書讀昏了頭。但這令我想起我讀中學時的一條geometry題目。咁多年都仲記得，可想而知有幾富挑戰性。不如你地都試下啦！
There are two overlapping circles. The circumference of Circle A bisects the circumference of Circle B. The circumference of Circle B passes through the center of Circle A. Let the radius of Circle A be x, find the area of the intersection (ie, the overlapping part) of the 2 circles.
畫得出幅圖先啦！
There are two overlapping circles. The circumference of Circle A bisects the circumference of Circle B. The circumference of Circle B passes through the center of Circle A. Let the radius of Circle A be x, find the area of the intersection (ie, the overlapping part) of the 2 circles.
畫得出幅圖先啦！
Labels: On the light side
haha.. do u have the answer?
i calculated it to be (0.25pi – 0.5)a^2
Posted by
mandy |
March 04, 2007 1:01 AM
oops. should be x instead of a
Posted by
mandy |
March 04, 2007 1:03 AM
Close.
Usually we'll write
[(pi-1)x^2]/2
Posted by
Alan Yu |
March 04, 2007 2:28 PM
Oh, and those who don't know how we figure it out, keep trying!
Posted by
Alan Yu |
March 04, 2007 2:29 PM
最憎數學>.<
我自從小三同小四上堂時自己自修睇晒本書, 每日上堂做做做, 在上學期已學晒成年既野之後....
小五開始我的數就每況越下......
>.<
中一還可以...
中二, 中四和中五的那位老師(同一個人)
上堂基本上每日都一定會做錯數..
唔係冇左個unit就計錯小數位...
(仲要後來因為一本"會考practice"而令我討厭左個miss...在此不表...但那是有關老師希望工作上得進升而做出不太好的事喇)
之後對數更是無興趣....
>.<
Posted by
Anonymous |
March 05, 2007 12:59 PM
唔好賴人。
Posted by
Alan Yu |
March 05, 2007 10:41 PM