A5 paper size in mm

What is A5 paper size in mm ?

A5 size in mm is 148x210

The aspect ratio of an A5 paper is 1:1.42,The area of an A5 paper is 31080 mm², Perimeter of an A5 paper is 716 mm, Diagonal line of an A5 paper is 256.91 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