B7 paper size in mm

What is B7 paper size in mm ?

B7 size in mm is 88x125

The aspect ratio of an B7 paper is 1:1.42,The area of an B7 paper is 11000 mm², Perimeter of an B7 paper is 426 mm, Diagonal line of an B7 paper is 152.87 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