Question

The density of steel rod is $7850kg/m^3$, its mass is $5kg$.Find its volume?

• A. $7.36\times {10}^{-4}{m}^3$
• B. $36\times {10}^{-4}{m}^3$
• C. $6.36\times {10}^{-4}{m}^3$
• D. $6\times {10}^{-4}{m}^3$

Answer 1

The correct option is C $6.36\times {10}^{-4}{m}^3$

Mass of steel rod $m=5kg$
Density of steel rod $d=7850kg/m^3$
Volume of steel rod $V=\frac{m}{d}$
$⟹V=\frac{5}{7850}=6.36\times {10}^{-4}{m}^3$