B9 paper size in mm

What is B9 paper size in mm ?

B9 size in mm is 44x62

The aspect ratio of an B9 paper is 1:1.41,The area of an B9 paper is 2728 mm², Perimeter of an B9 paper is 212 mm, Diagonal line of an B9 paper is 76.03 mm

Millimeter is a unit of length and a unit of rainfall, abbreviated in English as mm. 1mm=0.1cm=0.01dm=0.001m=0.000001km=1 000μm=1 000 000nm