A4 A3 what is the size of the paper? Why do you call it?
The size of A3 and A4 paper as follows: (CM)Specifications: A3 paper width of 42, height 29.7 (horizontal). Width 29.7, height 42 (longitudinal).A4 specifications: width of 29.7, height 21 (horizontal). Width 21, height 27.7 (longitudinal).
According to the basic area of the paper format, the format specification is divided into A series, B series and C series, format specifications for A0 format size: 841mm * 1189mm format, an area of 1 square meters; the B0 size is 1000mm * 1414mm, an area of 2 square meters have the format C0 format size is 917mm; * 1297mm format, an area of 1.25 square meters; the format specifications of copy paper by A and B series. If the A0 along the length of paper into two parts, will become the A1 specification, the A1 paper along the length direction of, will become the A2 specifications, so to open to the A8 specification; B0 paper also according to the method of opening to B8 specifications. Among them, A3, A4, A5, A6 and B4, B5, B6 7 format specifications for copy paper commonly used specifications.
