[tex]A _{patrat}=A _{dreptunghi} =L*l=80*60=4800m ^{2} = \frac{4800}{10000} =0,48ha \\ A _{rosii}=\frac{45}{100}* A _{patrat}=\frac{45}{100}*4800=2160m^{2} \\ A _{ardei}=A _{patrat}-A _{rosii}=4800-2160=2640m ^{2} \\ rosii=90kg*3lei/kg=270lei \\ ardei=60kg*3,5lei/kg=210lei \\ rosii+ardei=270+210=480lei[/tex]