A 1 84 1*594
A2 594*420
A3 420*297
A4 297*2 10
B0 1030* 1456
B 1 728* 1030
B2 5 15*728
B3 364*5 15
B4 257*364
B5 182*257
Calculation method:
When scaling 50%, the length and width are reduced by 50% at the same time, that is, the paper used is reduced by 25%.
My printer shows:
70% reduction from A3 to A4;
A4 to B5 decreased by 86%;
B5 to A4 are all enlarged by 1 15%.
I am so sleepy that I have to go to bed.