How to evaluate automatically the length of polygons boundaries?

[KarolinaKorzeniowska]

I have a vector data-set with polygons. It it possible to evaluate in an automatic way the length of polygons boundaries? Some objects (polygons) in my data-set represent a group of polygons and they should be evaluated as one polygon, also some of the polygons have holes inside the polygon, and the boundary of these holes should also be taken into the length of polygon.

[DanPatterson_Retired · Accepted solution]

area is calculated automatically, the boundary needs a field calculation...calculate geometry and use perimeter from the options dropdown..