l siL d p cu 0,8(3) si 0,375
si P=116 =>2l+2L=116 impartim cu 2 =>l+L=58
=>l/0,8(3)=L/0,375=k {0,8(3)=(83-8)/90=75/90 simplificam cu 15=5/6}
{0,375=375/100=simplificam cu 25=15/4}
deci : l/5/6=L/15/4=k
6l/5=k 6l=5k l=5k/6
L/15/4=k 4L=15k L=15k/4
l+L=58 5k/6+15k/4=58 numitor comun 12
10k/12+45k/12=696/12
inmultim totul cu 12
10k+45k=696
55k=696
k=696/55
l=5/6x696/55
l=116/11
L=15/4x696/55
L=522/11
verificare
2x116/11+2x522/11=(232+1044)/11=1276/11=116
Aria=116/11x522/11=60552/121=500,43
