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# surface area

position vector

ucosvi+usinvj+vk, i,j,k is each unit vector of x,y,z

0<=u<=1,0<=v<=pi

what is the surface area?

### 2 Answers

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- mathmanliuLv 71 decade agoFavorite Answer
(pi/2)*{ sqrt(2)+ln[sqrt(2)+1]}

2009-12-31 11:03:08 補充：

圖片參考：http://imgcld.yimg.com/8/n/AE03435620/o/1609123008...

或參考:http://s585.photobucket.com/albums/ss296/surfacear...

or

http://www.wretch.cc/album/show.php?i=mathmanliu&b...

2009-12-31 11:17:47 補充：

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