An A4 page is too large to fit into an A5 page, as A4 is twice as large than A5. An A5 page would fit into an A4 page twice.
The ratio of the area of an A4 page to an A5 page is 2:1. Therefore, theoretically, you could fit 2 A5 pages into an A4 page if you were able to perfectly divide the A4 page into equal halves. However, in practice, due to margins and other factors, it may not be possible to fit two complete A5 pages onto a single A4 page.
A5 has a higher frequency than A4. Each octave increase doubles the frequency, so A5 is one octave higher than A4.
While there are many ways of doing it, the simplest way is to use the SUM function and a range in it like this: =SUM(A1:A5)
A5
A5.
Half of A4 is A5.
The size of A5 is 210mm on 148mm. In general, the size of A4 is twice bigger than A5, A3 is twice bigger than A4, and so on...
Just fold it in half. A4 is 210 x 297 mm; A5 is 148 x 210 mm.
http://wikisource.org/wiki/%E0%A4%AD%E0%A4%97%E0%A4%B5%E0%A4%A6%E0%A5%8D_%E0%A4%97%E0%A5%80%E0%A4%A4%E0%A4%BE
An A5 sheet of paper measures 21 cm x 14.8 cm.It is exactly half the size of an A4 sheet of paper.
A quarter of an A4 sheet of paper is typically referred to as a quarter sheet or quarter page. It is a common measurement used in printing and design to indicate a smaller portion of a standard A4 size paper.