Răspuns:
L=9 l=6 P = 2L+2l= 18+12= 30m
L= 54cm P=160cm l= (160-2*54):2= 52:2=26 cm
l=74 P= 4*l=296mm
3dm4 cm=30+4=34 cm P= 4*34=136 cm
