數學題:求長方形的面積?
回答 (2)
2008-02-12 1:34 am
✔ 最佳答案
let the width and length be x and yxy=2x+2y
xy-2y=2x
y(x-2)=2x
y=2x/(x-2)
where x and y and positive integer.
http://www.imagehosting.com/show.php/1571010_.jpg
x=3, y=6 or x=4 ,y=4 or x=6 ,y=3
so the area is 18 or 16
2008-02-12 1:22 am
If X=Lenght, Y=Width, Z=Area / 周界
Area: Z=XY
周界: Z=2X+2Y
Area: Z=XY
周界: Z=2X+2Y
參考: my memory
收錄日期: 2021-05-02 16:23:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080211000051KK02664