Question 174229
density equals mass divided by volume
:
D=m/V
:
The volume of the displaced fluid is the same as the volume of the object, so can figure the volume of the object.
:
we are given the mass at 45 grams
:
the volume would be the same as the displaced water which is 
:
Volume of metal and displacement: {{{3(3)(1.8)=16.2(cm)^3}}}
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so {{{D=45/16.2=2.78(g/cm^3)}}}