B10 paper size in mm

What is B10 paper size in mm ?

B10 size in mm is 31x44

The aspect ratio of an B10 paper is 1:1.42,The area of an B10 paper is 1364 mm², Perimeter of an B10 paper is 150 mm, Diagonal line of an B10 paper is 53.82 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