Circle Calculator
Definition
Circle - one of the simplest shapes described by the so called Euclidean geometry. The circle is a collection of all points on any one plane in a specific distance from one point called the center. The word as we know it today comes from the ancient greek κίρκος (kirkos), which stands for “ring” or “hoop”.
Equation form:
| r = | d |
| 2 |
| d = 2 * r |
| circumference = 2 * π * r |
| area enclosed = π * r² |
About Circle Calculator tool.
Remember this tool should be used only to calculate area, perimeter or volume of a figure. The results we provide are accurate, but rounded to the 12th decimal place. It accepts scientific notation and converts immediately.