I will give brainliest please explain

Answer:
The width is 2
Step-by-step explanation:
The volume of a rectangular box is given by
V = l*w*h
We know the volume is 12 the length is 2 and the height is 3
12 = 2*w *3
12 = 6w
Divide each side by 6
12/6 = 6w/6
2 = w
The width is 2