Răspunsuri

2014-05-19T10:56:30+03:00
L=5l
P=l+l+L+L=144
2l+2L=144 /:2
l+L=72
l+5l=72
6l=72
l=72:6
l=12

L=12*5
L=60

Aria=L*l
Aria=60*12
Aria=720
1 5 1