Răspunsuri

2014-04-29T08:00:48+03:00
P=L+L+l +l
P=180m
L+L+2/3L+2/3L=180m
2L+4/3L=180m aducem la acelasi numitor
6L+4Ltotul supra3=180m
10L/3=180m
10L=180mx3
10L=540m
L=540/10
L=54m lungimea terenului
l=2/3 L
l=2/3x54
l=108/3
l= 36m latimea terenului
verificare
54+54+36+36=180m
108+72=180m
180m=180m


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