On the drawing’s level
Selecting points
(See Measuring in Image Files/Types & Method of Measurement/Measuring a Surface Area/On the drawing’s level).
Object selection
By selecting objects, you can measure the surface area of standalone CAD entities. To measure the surface area of CAD entities, select the 'By counting objects’ method and click OK.
Then, select the CAD entities whose surface area you wish to measure, by clicking on them or by selecting all of them at once in such a way as to include the desired entities. This way, you can measure with just one click, for example, the volume of concrete in a plan view, allowing only the corresponding layer to be visible, by specifying the height and selecting all concrete walls and props at once.
By selecting objects, you can measure
of CAD entities, while you cannot mark areas that are not objects.