Respostas

2013-09-07T16:34:40-03:00
D = m/v
7,85 = m/ 1000000
m = 7850kg 
2 5 2
2013-09-07T17:06:01-03:00
Densidade = massa/volume
1m³ = 1 .  10 ^{-6} cm³.
7,85 m/ 1.  10 ^{-6}
m = 7,85 .  10 ^{-6}  cm³
1 5 1