The cabinet are standard 24"wide , so
what you do is three inches every were
you have an edge detail for example.
A=120"x27"..divided by 144 = 22.5 sq ft
B=63"x27"..divided by 144 = 11.8 sq ft
C=66"x42"..divided by 144 = 19.2 sq ft
The total amount of sq ft woould let you
know how much materials you will need
to completed your project.
In this cases you have 53.55 sq. ft.
Bull nose= 31 LF.