Jawabanmu

2014-04-17T10:22:06+07:00
Rho=m/V=m.4/3πr²r=0,6.4/3.3,14.0,05.0,05.0,05= 0,8.0,0003925=0,000314 kg/m3
1 5 1
2014-04-17T10:22:36+07:00
Massa jenis = massa / volume

volume bola = 4/3 * 22/7 * r*r*r

hitung sendiri ya...
1 1 1