A5 paper is:
148 × 210 mm
14.8 cm by 21.0 cm
5.83" X 8.27"
(notepad size).
-----------------------------------------------------------------------------
Take a piece of A4 paper (the size that goes into a normal computer printer) and fold this in half so that the two shortest edges are together. The folded piece of paper is A5 in size.
Yes half of A4 is A5 but the photocopy or printer paper used in USA & Canada is not A4 size but 8.5x11".
1 m = 100 cm 1 sq m = 1 m x 1 m = 100 cm x 100 cm = 10000 sq cm ⇒ 0.01 sq m = 0.01 x 10000 sq cm = 100 sq cm A C7 envelope (big enough to hold a piece of A7 paper, or A6 paper folded in half, or A5 folded in quarters) is 8.3 cm by 11.2 cm which has an area of 8.3 cm x 11.2 cm = 92.2 sq cm. It should be quite possible to write your name and address on a piece of paper with an area of 0.01 sq m = 100 sq cm, for example a piece of paper 10 cm by 10 cm. Now that I've written my name and address on a piece of paper 10 cm by 10 cm, what should I do with it?
21 by 29.8 cm
About 25
210mm & 297mm sides
There are 3 cm in 3 centimetres!
cm
1 Centimeter!
In the U.S., letter size paper is 8.5" wide (21.59 cm).
20 cm² represents an area measurement, equivalent to a square that is 4 cm on each side. It can also be visualized as a rectangle measuring 10 cm by 2 cm. In practical terms, it's a relatively small area, comparable to the size of a standard piece of paper.
A=346.1850 cm2
The area of a rectangle is calculated by multiplying its length by its width. For a piece of paper measuring 21 cm by 15 cm, the area is 21 cm × 15 cm, which equals 315 square centimeters.
cm