Geometry
Circle Radius from Area
Radius given the area.
Formula
Formula
r = √Aπ
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| A | area | real number (ℝ) | — | input |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenarea A = 78.5398
Result4.99999948
Example 2
Givenarea A = 12.566
Result1.999970507