plzz dau coroanaaaa plzzzzzzzzzzzz

Răspuns:
l=latime
L=lungime
P=perimetru
P=2L+2l (dreptunghi)
l=L:4=> L=4l
=> P=4l*2+2l=8l+2l=10l
P=450 => l=450:10=45m
L=4l=45*4= 180m