Răspunsuri

2014-06-04T17:27:02+03:00
Cel mai inteligent răspuns!
2014-06-04T17:30:21+03:00
Foloseste formula " Lcerc=2*π*Raza" si o sa ai.... 18=2π*R -> R=18/2π -> R=9
dupa care folosesti formula... Adisc=π* R² -> Adisc=π*9²-> Adisc=81π 
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