Răspuns:
4. P= 128 P=4l => l= 128:4= 32 m latura
5. P=2L+2l =14 14-2*4=14-8=6
2l=6 => l= 6:2= 3 m latimea =3 m
6. P= 65*4 =260 m
da 4 ture 260*4= 1040m
7. P= l1+l2+l3 160 -60 = 100 l1=l2
100:2= 50 m 50+50+60 =160
160-60-60=160-120 = 40 m
60+60+40=160