What is the increase in the volume of a cube of 1 unit edge if each of its edges is tripled?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 26 cu units
Volume of the cube of 1 unit edge = 1 unit × 1 unit × 1 unit = 1 cu.unit
Now,
New side = 3 units
So,
Volume of the cube of side 3 units = 3 units × 3 units × 3 units = 27 cu.units
So, the increase in volume = 27 cu.units - 1 cu.unit = 26 cu.units