A) 6 units
B) 8 units
C) 9 units
D) 10 units
Correct Answer: A
Solution :
Volume of a cube \[=l{{\,}^{3}}cu.\] units Surface area of a cube\[=6\,{{l}^{2}}sq.\]units, where\['l'\] is the length of each side of a cube. Given that the volume of a cube is numerically equal to its surface area \[\Rightarrow \] \[{{l}^{3}}cu.units=6\,{{l}^{2}}\,sq.\,units\] \[\Rightarrow \]\[\frac{{{l}^{3}}}{{{l}^{2}}}=6\] \[\Rightarrow \]\[l=6\,units\] \[\therefore \]The length of each side of the cube = 6 units.
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