Răspuns :
Răspuns:
Perimetrul=120m=2×a+2×b
a/b=2=> a=b*2 => 4b+2b=120
6b=120
b=20m
a=40m
P = 120 = 2L + 2l
L/l = 2 => L = 2l
120 = 2·2l + 2l
120 = 4l + 2l
120 = 6l
l = 120 : 6
l = 20 m
L = 40 m
Răspuns:
Perimetrul=120m=2×a+2×b
a/b=2=> a=b*2 => 4b+2b=120
6b=120
b=20m
a=40m
P = 120 = 2L + 2l
L/l = 2 => L = 2l
120 = 2·2l + 2l
120 = 4l + 2l
120 = 6l
l = 120 : 6
l = 20 m
L = 40 m