Greek letter Pi, illustration. The number pi is a mathematical constant, defined as the ratio of a circle's circumference to its diameter. It is used in many formulas in all areas of mathematics and physics. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Laguna Design |
Taille de l’image : | 5000 px × 3750 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |