A scale factor is a ratio.
So, we can conclude from the ratio that for every centimeter in the model, the actual structure will have 12 centimeters.
12 x 32 = 384
The last step is to convert centimeters into meters.
Since one meter is equal to 100 centimeters, we can divide the centimeter value by 100.
384 / 100 = 3.84
Therefore, the depth of the water tower is 3.84 meters.
Hope this helps! :)