Dimensional formula for volume is

dimensional formula for volume is $\left[{\mathrm{L}}^3\right]$

Because volume of a body = length $\times$ breadth × height

$=\mathrm{L}\times \mathrm{L}\times \mathrm{L}={\mathrm{L}}^3$

We can get the dimension of volume in length is 3

$\therefore \text{ Dimensional formula for volume }=\left[{\mathrm{L}}^3\right]$