Question: Test, for dimensional homogeneity, the following formula for volume flow Q through a hole of diameter D in the side of a tank whose liquid

Test, for dimensional homogeneity, the following formula for volume flow Q through a hole of diameter D in the side of a tank whose liquid surface is a distance h above the hole position:
Q = 0.68D2 √gh
Where g is the acceleration of gravity, what are the dimensions of the constant 0.68?

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