Hi!
I would do it this way:
-Add alpha channel (Layer, Transparency, Add Alpha Channel)
-Apply selection
-Invert selection (Select, Invert or Ctrl+I)
-Delete the area selected
-Autocrop image (Image, Autocrop Image)
-Save in png format (that saves transparency.)
-in word: instert picture from file
I opened a jpg image file in Gimp, and I want to select and copy an
elliptical area of the image and paste it into a Word document. I use
the ellipse selection tool, but when I copy and then paste it into Word,
the selected elliptical area is always displayed inside a larger
rectangular area,