2012

System Variables
DISTANCE
Stores the distance computed by the DIST command.
Obtain Area and Mass Properties Information
You can obtain the area, perimeter, and mass properties defined by selected
objects or a sequence of points.
You can calculate the area and perimeter of a sequence of points. You can also
obtain the area, perimeter, and mass properties of any of several types of
objects.
TIP A fast way to calculate an area bounded by several objects in 2D is to use the
BOUNDARY command. With BOUNDARY, you can pick a point within the area to
create a closed polyline or region. You can then use the Properties palette or the
LIST command to find the area and perimeter of the polyline or region.
Use Commands to Calculate Area
With the MEASUREGEOM and AREA commands, you can specify a series of
points or select an object to calculate area. If you need to calculate the
combined area of multiple objects, you can keep a running total as you add
or subtract one area at a time from the selection set. You cannot use window
selection or crossing selection to select objects.
Total area and perimeter are saved in the AREA and PERIMETER system
variables.
In addition to area, with the MEASUREGEOM command, you can obtain
geometric information from objects such as distance, radius, angle, and volume.
Define an Area
You can measure an arbitrary closed region defined by the points you specify.
The points must lie on a plane parallel to the XY plane of the current UCS.
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