Question

Each side of a cube is measured to be $7.203m$.The volume of the cube to appropriate significant figure is:

• A. $31.3m^3$
• B. $313m^3$
• C. $373.7m^3$
• D. $37.3m^3$

Answer 1

The correct option is C $373.7m^3$

Side of cube $a=7.203m$
Volume of cube $V=a^3$
$⟹V=(7.203{)}^3=373.714m^3$
Since the value of side of cube has 4 significant figures, thus the value of volume of cube must also have 4 significant figure.
Thus volume of cube $V=373.7m^3$