Is it possible to calculate the surface area of an Polygon ZM?

[TH1]

Hello together,

i had to calculate the 3D area of some roofs and dormers, all are Polygon ZM. I already tried to create a TIN out of the polygons and than use the "Add Surface Information" tool, but that didn't worked that well.

Is there a better option to calculate this value?

This is how the buildings look like

Thanks for help

[DanPatterson_Retired]

What do you mean by it didn't work too well? It is there.

Add Surface Information—Help | ArcGIS Desktop 

The polygon class only offers 3D length

Polygon—ArcPy classes | ArcGIS Desktop 

[TH1]

I got it now. I simply divided the two-dimensional surface of the roof-polygons by the cos of the corresponding angle... Thanks for your reponse.