The discussed format is the smallest A series one.
The total surface of A10 is 0,0015 square meters that is - 1.5 cm2. The dimensions of the A10 are 26 x 37mm. While it is expressed in pixels (for the resolution of 300px), it is 307px x 437px, and in points - 73,7pt x 104,9pt. The ratio between A10 and A0, the biggest format normalized by the ISO 216 standard is 1024 to 1, which means that a singular A0 sheet of paper consists of 1024 A10 ones. The said principle can be applied while calculating the basis weight of a sheet of A10 paper. One has to divide the mass of A0 (which always serves as a point of reference) by 1024.