更新1:
thx.
about area,help!Urgent!
回答 (1)
2007-01-03 4:25 am
✔ 最佳答案
the equation of the line joining (-4,-3) and (0,5) is(y+3)/(x+4)=2
2x-y+5=0
sub y=0, x=-5/2
the equation of the line joining (-4,-3) and (5,0) is
(y+3)/(x+4)=1/3
x-3y-5=0
sub x=0, y=-5/3
so
the area of the shaded region
=(5+5/3)(4)/2+1/4*pi*5^2+5*(5/3)/2
=37.1350
收錄日期: 2021-04-25 16:49:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070102000051KK04656