How do I choose the size an image will print out at?

I’ve got images as png files. I’d like to print them out so they’ll fit inside a 2 3/8 circle.

Be more specific. Are thous images only thing on the page? Could you set page size to as 2 3/8 square and resize images accordingly? Can you edit your images in external program (Gimp?) so they fit in 2 3/8 circle and then you insert them in Draw on 2 3/8 page? It’s hard to understand what you have and what you need. Try to be more elaborative.

Is the screenshot helpful for you? Circle diameter is 2.375 inches.

Approach for your problem is property of area, relative 100 percent width/height.

(edit: activated screenshot)