Question 1028721
All done in millimeters,


{{{v=2m^2(1000)(1000)(mm/m)^2*128*mm}}}, but you need to be clear about  the data about the collection tank.  2 square meters cross section area ?   Or side of the square base being 2 meters each?  Which is it?


The way I wrote the formula and substituted values, 2 square meters is the area of the square base.