Răspuns :
L=35 + l
P=370 + l
2L+2l=370+l
2x(35+l)+2l-l=370
70+2l+l=370
3l=370-70
l=300:3
l=100 cm
L=35+100
L=135 cm
P=370+100
P=470
Verificare
470=2(100+135)
470=2x235
470=470
P=370 + l
2L+2l=370+l
2x(35+l)+2l-l=370
70+2l+l=370
3l=370-70
l=300:3
l=100 cm
L=35+100
L=135 cm
P=370+100
P=470
Verificare
470=2(100+135)
470=2x235
470=470
L=l+35
P=l+370
2(L+l)=l+370
2(l+35+l)=l+370
2l+70+2l=l+370
2l+2l-l=370-70
3l=300
l=300:3
l=100 m
L=l+35
L=100+35
L=135 m
P=l+370
2(L+l)=l+370
2(l+35+l)=l+370
2l+70+2l=l+370
2l+2l-l=370-70
3l=300
l=300:3
l=100 m
L=l+35
L=100+35
L=135 m