The volume of a cube is numerically equal to sum of its edges. What is the total surface area in square units?
Correct Answer: 72
Explanation:
Let the edge of a square be x. and sum of its edges = 12 x
Now, by condition, x3 = 12x
⇒ x(x2 - 12) = 0
⇒ Its total surface area = 6x2 = 6(12) = 72 sq units
