All dimensions for ISO paper sizes like A4 and A3 are integer numbers of millimetres. For example, A3 is 420mm x 297mm exactly and if there are any numbers after the decimal point then they should be all zeroes.

The Print dialog box shows two decimal places with non-zero numbers. For example it shows A3 landscape as 419.95 x 296.93mm. These numbers after the decimal place are useless, but they are also incorrect. It should display "420 x 297mm" or "420.00 x 297.00 mm"

Please remove the erroneous non-zero numbers after the decimal point.