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problema 19 va rog ajutatima

Problema 19 Va Rog Ajutatima class=

Răspuns :

40•1/4=161/4
5•1/2=11/2
l=161/4-11/2 (ducem la acelasi numitor)
l=161/4-22/4
l=139/4
Lungime gard=2•161/4+2•139/4
=322/4+278/4
=600/4=150m