Răspuns :
P=436m
L=72+l
(L+l)*2=436m
(72+l+l)*2=436m
72+2l=436/2=218m
2l=218-72=146m
l=146/2=73m
L=72+73=145m
L=72+l
(L+l)*2=436m
(72+l+l)*2=436m
72+2l=436/2=218m
2l=218-72=146m
l=146/2=73m
L=72+73=145m