I don't have software in my laptop so describing it.
Type command
'Line' and hit enter. Now you need to specify first coordinate point so type 0,0 or whatever point you want to start with. Here i will take 0,0 as starting point.
After this just keep on putting next cordinate point to create outer envelope without circle. Here are the cordinate point.
(0,0)
(75,0)
(75,52)
(101,52)
(116,67)
(116,92)
(0,92)
(0,0)
So now to draw circle type 'circle' in command window and select center tre and diameter method. Provide center value as (25,25) and diameter value 30 after hitting enter.
Now for another circle repeat same with center as (25,67) and diameter of 20. To give dimensions use linear dimensions and diameter dimensions.
Please help if familiar with auto cad [ Chapter 2- Drawing in AutoCAD®1 P2-6) May be attempted after completing the WCS/UCS Coordinate Systems using Coordinates and the Printing Tutorials in secti...