Respostas

2013-09-22T20:36:37-03:00
V = 500cm * 100cm * 40cm = 2000000 = 2,0 * 10 elevado a 6 cm³
Densidade do ferro = 7,874 g/cm³
m = ?

D=m/V
7,874 = m/2,0 * 10^6
m = 7,874 * 2,0 * 10^6
m = 15748000 g
m = 15.748 Kg ou 15,748 toneladas