1. Dimension: A3 paper has dimensions of 420mm x 297mm, while A4 paper has dimensions of 297mm x 210mm. This means that A3 paper is longer and wider than A4 paper.
2. Surface area: Since A3 paper is larger than A4 paper, it has a larger surface area. A3 paper has a surface area of 12540 square millimeters, while A4 paper has a surface area of 6237 square millimeters.
3. Uses: A3 paper is commonly used for large posters, folded brochures, technical drawings, and diagrams. On the other hand, A4 paper is the standard size for most documents such as letters, reports, and essays.
4. Availability: Since A4 paper is the more commonly used size, it is readily available in most stationery stores and offices. However, A3 paper may be less common and may need to be specially ordered or purchased from specialized suppliers.
5. Printing: When printing on A3 paper, you can fit two A4 pages side by side without having to reduce the font size. This can be an advantage when printing documents such as booklets or presentations.
In conclusion, A3 paper is larger than A4 paper in terms of both dimensions and surface area, and is typically used for different purposes. It is important to choose the right size of paper based on the intended use, availability, and printing requirements.
