Dichte Blei p = 11.34 g/cm^3 = 11.34 kg/dm^3
v = m/p = 1 / 11.34 = 0.08818 dm^3 = 88183 mm^3
88183 / (4/3 * pi * 1^3) = 21052 Kugeln
v = m/p = 10 / 11.34 = 0.8818342151 cm^3
v = 4/3 * pi * r^3
2·r = 2·(3·v/(4·pi))^{1/3} = 2·(3·0.8818/(4·pi))^{1/3} = 1.190 cm