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stiind ca Pd=208 cm si ca L=el,afla 2l×L

Răspuns :

[tex]Pd=2L+2l=\ \textgreater \ 208=2*3l+2l=\ \textgreater \ 208=6l+2l=\ \textgreater \ 208=8l=\ \textgreater \ \\ l=208:8=\ \textgreater \ l=26=\ \textgreater \ L=3*l=3*26=78 2l*L=2*26*78 \\ =4056