The volume of a cube is numerically equal to its surface area. What is the length of its side?
Answer & explanation
Correct answer: option 1
Volume of a cube = l3cu. units surface area of a cube 6l2sq. 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 ⇒ l3cu. units = 6l2sq. units
$⇒\frac{l^3}{l^2}=6$ ⇒ l = 6 units
The length of each side of the cube = 6 u nits.