B8 paper size in mm

What is B8 paper size in mm ?

B8 size in mm is 62x88

The aspect ratio of an B8 paper is 1:1.42,The area of an B8 paper is 5456 mm², Perimeter of an B8 paper is 300 mm, Diagonal line of an B8 paper is 107.65 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