Răspunsuri

2014-07-29T17:24:01+03:00
L=3l

A=300
A=L*l=3l*l= 3l²

3l²=300
l²=100  =>l=10

L=3*10=30

P=2l+2L=2*10+2*30= 20+60=80cm
Cel mai inteligent răspuns!
2014-07-29T17:46:22+03:00
L=3l V=300 V=3l*l=3l² l=10 L=3*10=30 P=2l+2L=80
1 5 1