It provides various useful calculations for conversion of various shapes and also International paper sizes for the purpose of documentation.

## Some Useful Calculations

Area Volume
Circle
Hexagon 2.598 * S2 Cube S3
Octagon 4.828 * S2 Cylinder
Rectangle base * height Pyramid base area * height * 1/3
Square S2 Rectangular Length * width * height
Triangle base height * 1/2 Sphere
Circumference

N.B  S = a side

## International Paper Sizes

Some of the standard paper sizes used internationally are as follows:

A series B Series C Series
A0 1189 * 841 mm B0 1414 * 1000 mm C0 1297 * 917 mm
A1 841   * 595 mm B1 1000 * 707   mm C1 917   * 648 mm
A2 594   * 420 mm B2 707   * 500   mm C2 648   * 458 mm
A3 420   * 297 mm B3 500   * 353   mm C3 458   * 324 mm
A4 297   * 210 mm B4 353   * 250   mm C4 324   * 229 mm
A5 210   * 148 mm B5 250   * 176   mm C5 229   * 162 mm
A6 148   * 105 mm B6 176   * 125   mm C6 163   * 114 mm
A7 105   *   74 mm B7 125   *   88   mm C7 114   *   81 mm
A8 74     *   52 mm B8 88     *   62   mm C8 81     *   57 mm