Răspuns :
P=2(L+l)
2(L+l)=208
2(3l+l)=208
2x4l=208
8l=208
l=208:8
l=26
L=3x26=78
2lxL=2x26+78
2l+L=52+78
2l+L=130 cm
2(L+l)=208
2(3l+l)=208
2x4l=208
8l=208
l=208:8
l=26
L=3x26=78
2lxL=2x26+78
2l+L=52+78
2l+L=130 cm