Pressure gradient = Pressure / Distance
==>>. [P.G] = [ML^-1 T^-2] / [L]
==>>. [P.G] = [ML^-2 T^-2]
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Dimensional analysis simply ensures that two sides of an equation have the same dimensions. By "dimensions" I mean quantities like distance, pressure, force, time, electric charge, etc. For example, a distance can not equal a time. So, if the dimensions are wrong, the equation is wrong, but if the dimensions are right, the equation may be right or it may be wrong. Getting the dimensions right is only part of the task!
What you are looking for are driven dimensions. Derived dimensions must be a typo. Driven dimensions are enclosed in parentheses to distinguish them from regular dimensions in inventor. These dimensions do not contrain a sketch they simply reflect dimensioned geometry which is most likely under some geometric constraint.
Na+-K+ ATPase
The dimensions are: The dimensions of the square are LW Length x width (srry about the last one)
A triangle is a plane figure so it has two dimensions: length and breadth.