A company manufacturing PVC pipes claims in an advertisement that the volume of water flowing out through the pipe in a given time is as per the equation `V=KA^2ut` where A is the area of cross section of the pipe, u is the speed of flow, t is the time and K is a dimensionless constant.
Check the equation and state whether the claimis correct.

A company manufacturing PVC pipes claims in an advertisement that the volume of water flowing out through the pipe in a given time is as per the equation V=KA^2ut where A is the area of cross section of the pipe, u is the speed of flow, t is the time and K is a dimensionless constant. Name the principle that can be used to check the dimensional correctness of this equation.