Răspuns :
L=3l
P=2x(L+l)=2x(3l+1l) =2x4l=8l
8l=400m
l=400m:8=50m
L=50mx3=150m
P=2x(150+50)=400m
P=2x(L+l)=2x(3l+1l) =2x4l=8l
8l=400m
l=400m:8=50m
L=50mx3=150m
P=2x(150+50)=400m
P=400m
L=3*l
P=2(l+L)=2l+2L
P=2l+(2*3) l=400
8l=400
l=50
L=50*3=150
V=2(50+150)=100+300=400
L=3*l
P=2(l+L)=2l+2L
P=2l+(2*3) l=400
8l=400
l=50
L=50*3=150
V=2(50+150)=100+300=400