Exercițiul 12 va rog frumos

Răspuns:
1hm= 100m
1dam=10m
2hm-2dam=200m-20m=180m
2hmX2=400m
400m+360m=760m
L=2hm => 200m
2dam=20m
L=200m-20m=180m
P=2•(200m+180m)
P=200•380m
P=760m
~Sper ca te-am ajutat!~