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ajutatima varog frumos

Ajutatima Varog Frumos class=

Răspuns :

L=50 cm
P=160 cm
160=2(50+ l)
160=100+2 l
2 l=160-100
l=60:2=30
P=174 cm
174:2=87
87=50+ l
l=87-50=37
37-30=7
Mărime lățimea cu 7
25)P=210 cm
L=4 l
210=2(4 l+ l)
210=2×5 l
5 l=210:2
5 l=105
l=105:5=21 cm
L=4×21=84 cm