Răspunsuri

2014-05-09T21:46:38+03:00
Pai: R=D/2=40π  Acerc=1600πmm²  Acerc/2=800πmm²   AriaBNOI=27,3×80=2184 mm²
 AriaDIO=B×h/2=960   si dupa   At=2184+800π+960=3944
    Cred ca asa ar veni :D