Răspunsuri

Cel mai inteligent răspuns!
2014-05-11T12:32:02+03:00
2014-05-11T12:33:35+03:00
P=2L+2l
84m=2L+2·12m⇒2L=84-24⇒2L=60⇒L=60/2⇒L=30m

2 4 2