By the time you receive the diagnosis for the condition of hydrocephalus, it is likely that you or your child have already been through a gamut of tests. This first of a three-part series describes the process of being diagnosed with hydrocephalus.
The ISO 216 standard defines A5 size to be 148mm Ã 210mm, which is also exactly half the size of an A4. Usually A5 sized paper will be used for booklet printing, flyers, leaflets, advertisements, or if on heavier stock, it can be scored and folded to make A6 sized greeting cards. In the ISO paper size system, the height-to-width ratio of all pages is the square root of two. In other words, the width and the height of a page relate to each other like the side and the diagonal of a square. This aspect ratio is especially convenient for a paper size.
A4 is the standard size of paper used for computer printouts and other uses. A4 paper is 210 Ã 297 mm. It has an area of 1/16 square metres. It is one of a series of pape â¦ r sizes starting with A0, which has an area of 1 square metre.  Another Answer The advantage of using A-series of paper sizes is that the height to width ratio remains constant throughout the series.hare to: A4 is approximately 297 mm by 210mm and has an area of exactly 1/16 sq m = 0.0625 sq m = 625 sq cm The A series of paper is based on the fact that they all have the same ra â¦ tio of width to length.