Thanks for the guide, I did the following:
Pixel size
Width : 3.5cm X 3 = 10.5 it is not taking, it is changing to 11 instead of 10.5
Height : 4.5cm X 2 = 9
Then when I change the print Size, the Pixel size is automatically changing.
I want to create a image file with six passport photos on a 4x6 photo print page. To do that I was asked to do the following:
I don't know how to "tile pattern"
How can I do this in Paint.net