Răspuns :
1) P =2*(L+l) => 600=2*(2l+l)=> 600=2*3l => 6l=600=> l =100
L=2l => L=2*100=>L =200
2) P=2*(L+l)=> 2500=2*(L+500+L) =>2500=2*(2L+500)=>2500=4L+1000=> 4L=1500 => L=1500:4 =>L =375
l=500+L => l=500+375 => l=875
L=2l => L=2*100=>L =200
2) P=2*(L+l)=> 2500=2*(L+500+L) =>2500=2*(2L+500)=>2500=4L+1000=> 4L=1500 => L=1500:4 =>L =375
l=500+L => l=500+375 => l=875