MathLiveArea of a circle
Gives the area enclosed by a circle from its radius. It is used whenever the area of a round region is needed.
A=\pi r^2What the symbols mean
| area of the circle (square units) | |
| radius of the circle (length) | |
| the constant pi, approximately 3.14159 |
About this formula
- FieldMathematics
- TopicPlane geometry
- LevelHigh school
- Also calledarea of circle, circle area formula, pi r squared, area of a circle formula, circle area, πr²
- SourceWikidata Q4115331
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