There are several ways to calculate or obtain the area and perimeter of an object in AutoCAD. And one of these ways is by using the AREA command. You can find it under the Tools pulldown menu, then Inquiry. Or at the command prompt, type Area.

With the AREA command, you can specify a series of points or select an object to know the area of a certain object. You can measure an arbitrary closed region defined by points you specify. You can calculate the enclosed area, perimeter or circumference of a circles, ellipses, polylines, polygons, regions, and 3D solids.

In order to calculate the area bounded by several objects, it is recommended to use BOUNDARY command before using the AREA command. with boundary command, you can pick apoint within the area to create a closed polyline.

Another way of obtaining the area of an object, is by using the LIST command. You can also find it under Tools pulldown menu, and under Inquiry, or at the command prompt, type LIST. The LIST command, will display object type, object later and X, Y, Z position of an object relative to the current UCS (User Coordinate System).

The List command, will also display the radius, the circumference and the area of a circle. And for any object other than circle it will display its series of specified points.

And last but not the list, you can obtain the area of an object by using properties pallette.

In properties pallette it will display the general information of an object, such as color, layer type, linetype, linetype scale, plot style, lineweight and thickness. It will also display the X, Y location of an object, it’s elevation, area and it’s length.

So,  which way I stated above is your choice on calculating the area of an object? My choice is the List command.