Răspunsuri

Cel mai inteligent răspuns!
2014-04-22T17:35:09+03:00
20dam=200m
P=2L+2l=200
L-20=l
P=2L+2(L-20)=200
2L+2L-40=200
4L=200+40
4L=240
L=60    l=60-20=40