With the "Extruded object" command, the objects created in the plan plane are converted into 3D.
The steps you should follow are as follows;
Create the view (plan or section according to the object you want to obtain) of the object you want on the line and plan plane.
Enter the extruded object command, select the drawing you have created, and click the right mouse button.
A preview of the object will be created. When you enter the length of your object in the value box in the toolbar and click the left mouse button, your object will be created.
By selecting your object and entering its settings, you can adjust the elevation, length and rotation angle.