Răspuns :
1 patrat = 4 laturi egale
P=l+l+l+l
P=408 m
l=408:4
l=102 m.
V= 102+102+102+102=408
r: lalura=102 m.
P=l+l+l+l
P=408 m
l=408:4
l=102 m.
V= 102+102+102+102=408
r: lalura=102 m.