Respostas

2014-05-08T23:20:56-03:00
Chumbod=11,3 g/cm3volume= ?massa = massa de 375 cm3 de sequóia = 142,5 
11,3= 142,5 / V    V=12,6cm3

sequóiad=0,38volume = 375 cm3        0,38=m/375   m=0,38x375  m=142,5g