Circle Radius from Area Reference Values
Calculate circle radius from area using r = √(A/π).
Table of Contents
Reference Value Index
This page lists 20 reference values for quick browsing and lookup.
All Reference Values
- 3.1416 sq units = 1.000001 units
- 12.5664 sq units = 2.000002 units
- 28.2743 sq units = 2.999998 units
- 50.2655 sq units = 4.000001 units
- 78.5398 sq units = 4.999999 units
- 100 sq units = 5.641896 units
- 150 sq units = 6.909883 units
- 200 sq units = 7.978846 units
- 300 sq units = 9.77205 units
- 500 sq units = 12.615663 units
- 800 sq units = 15.957691 units
- 1,000 sq units = 17.841241 units
- 1,500 sq units = 21.850969 units
- 2,000 sq units = 25.231325 units
- 3,000 sq units = 30.901936 units
- 5,000 sq units = 39.894228 units
- 8,000 sq units = 50.46265 units
- 10,000 sq units = 56.418958 units
- 20,000 sq units = 79.788456 units
- 50,000 sq units = 126.156626 units
Reference Table
| Area | Radius |
|---|---|
| 3.1416 sq units | 1.000001 units |
| 12.5664 sq units | 2.000002 units |
| 28.2743 sq units | 2.999998 units |
| 50.2655 sq units | 4.000001 units |
| 78.5398 sq units | 4.999999 units |
| 100 sq units | 5.641896 units |
| 150 sq units | 6.909883 units |
| 200 sq units | 7.978846 units |
| 300 sq units | 9.77205 units |
| 500 sq units | 12.615663 units |
| 800 sq units | 15.957691 units |
| 1,000 sq units | 17.841241 units |
| 1,500 sq units | 21.850969 units |
| 2,000 sq units | 25.231325 units |
| 3,000 sq units | 30.901936 units |
| 5,000 sq units | 39.894228 units |
| 8,000 sq units | 50.46265 units |
| 10,000 sq units | 56.418958 units |
| 20,000 sq units | 79.788456 units |
| 50,000 sq units | 126.156626 units |
Frequently Asked Questions
Frequently asked questions for Circle Radius from Area and its reference values.
What does the Circle Radius from Area calculator do?
It helps with estimating circle radius when area is specified in requirements or reports.
What formula does the Circle Radius from Area calculator use?
Circle radius = √(area / π).
What inputs are valid?
Area must be zero or greater for real-number results.
When would I use this?
estimating circle radius when area is specified in requirements or reports
Methodology and Review
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