Răspunsuri

2014-05-14T14:39:21+03:00
Notam cu x=latura

x- \frac{x}{2} =y(restul)

y- \frac{y}{4} =90
aduci la acelasi numitor

 \frac{4y-y}{4} =90

3y=90 *4
3y=360
y=120
x- \frac{x}{2} =120

 \frac{2x-x}{2} =120
x=120 *2
x=240

P=4X
P=240 *4= 960
5 4 5