I need to caculate the area of a property based on the topography, is there really no tool inherent to Desktop 10 or 3d Analyst to do this? It hasn't been an issue until we acquired a 10,000 acre tract with an extremely steep ridge and valley topography.

The simplest way I can think of doing this would be to create a grid within my property boundary and calculate individual areas for each polygon. Then caculate slope and create an integer grid of the same size and apply a slope calculation to each polygon's area....there's gotta be an easy way to do this. If it can calculate a 3d perimter and volumes etc, why not a 3d surface area??

Please tell me I'm missing something!

The simplest way I can think of doing this would be to create a grid within my property boundary and calculate individual areas for each polygon. Then caculate slope and create an integer grid of the same size and apply a slope calculation to each polygon's area....there's gotta be an easy way to do this. If it can calculate a 3d perimter and volumes etc, why not a 3d surface area??

Please tell me I'm missing something!

Google search of "calculating surface area in 3d arcgis" returned this:

http://forums.esri.com/Thread.asp?c=93&f=1734&t=282222

Also found this workflow:

http://www.learnarcgis.com/tutorial_preview.php?tutorial_id=44