Răspuns :
Ar = (%A1 + %A2 + %A3)/100
=> (89,97×20+0,76×21+9,27×22)/100
=> Ar = 20,193
[tex]ar = (\%a1 + \%a2 + \%a3)supra \: 100[/tex]
(89,97×20+0,76×21+9,27×22)/100
Ar=20,193
[tex]explicatie \: pas \: cu \: pas[/tex]
(89,97×20+0,76×21+9,27×22)/100
Ar=20,193
[tex]explicatie \: pas \: cu \: pas[/tex]