beautiful sight:
For the length of lines, select the lines and open the
Element Information palette. For the length of line(s) and/or the area, use the
Measure command. Information about these tools can be found by searching the Help files.
You should add a Signature to your Profile (click the Profile button near the top of this page) with your ArchiCAD version and operating system (see mine for an example) for more accurate help in this forum.
David