Final price is not calculating correctly

I have 6 items for sale, 3 different pricing formulas based on user entered values.

I have 3 sets of conditions setup in one form, there should be 3 different answers, but is giving the same answer for all conditions (the first one). 

Do you know what I have set wrong?

Thanks!

I have checked you conditions and the issue lies in the calculation order.

using the BODMAS rule you need to enclose similar calculations in brackets i.e

enclose the first multiplication of height*width in brackets

See enclose screenshot for the complete formula with the added brackets.

Apply the corrections to the other subsequent conditions.

Kindly confirm if the calculated result is the correct one after making these changes.