Answer:
Option D is the correct answer.
Explanation:
The specific gravity of copper is 8.91.
We have
[tex]\frac{\texttt{Density of copper}}{\texttt{Density of water}}=8.91\\\\\texttt{Density of copper}=8.91\times 1000kg/m^3=8910kg/m^3[/tex]
We also have
1 kg = 2.205 lb
1 m = 3.28 ft
Substituting
[tex]\texttt{Density of copper}=8910kg/m^3=\frac{8910\times 2.205}{3.28^3}=556.76lb/ft^3[/tex]
Option D is the correct answer.
