How do you mark an area or a part for detail view in autocad?

If you need to mark a specific area or a part of a drawing or plan you can hatch the specific area, you can also select specific hatch pattern to show the material applied in the area or the part of you drawing.

I am not an expert in Autocad but here's what I found online to answer this question:

 

Pick the tool, right click, choose the "object" option and select the shape whose area you wish to calculate. AutoCAD will provide you with the calculated area in the space below. Press "esc" to de-select this tool. You can even calculate a combined area of several objects together.

Depending on what's your next command or scope, I am using left click or double left click for marking (quick or full properties dialogue). For 3D, (this is my opinion),  it is better to completely isolate the object.

Regards,

I agree with mr. Sta Ji 

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agree with Loraine Domingo 

 

i just use different hatch pattern in auto-cad  to show different things .

I agree with the above answers

I leave the answer to experts specialists

Agree with Sta Ji Sir. Orelse u can use PL command which is call poly line on the specific area for which u need to b calculated and then go to list command by F1 u can find out the area.

Thanks, I agree with the answer by Mr. Sta Ji