C2 paper size in mm

What is C2 paper size in mm ?

C2 size in mm is 458x648

The aspect ratio of an C2 paper is 1:1.41,The area of an C2 paper is 296784 mm², Perimeter of an C2 paper is 2212 mm, Diagonal line of an C2 paper is 793.52 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