Răspunsuri

2014-10-01T15:10:00+03:00
V = l^3 = 2*2*2 = 8 dm cubi = 8 l (1 dm cub = 1 l)
ro = m/V => m = 8 * 7,89 * 1000 (1 dm cub = 1000 cm cubi) = 63120 g Fe = 63,12 kg