Circle Area from Radius
Calculate the area of a circle from radius using A = πr².
Table of Contents
11 units =
380.1327 sq units
Representative value from the Circle Area from Radius reference table.
Reference Values
Browse 20 reference values with individual detail pages for quick lookup.
Circle Area from Radius
Calculate the area of a circle from radius using A = πr².
Calculated Result
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Reference Table
Use this complete table for quick lookup and internal linking to specific value pages.
| Radius | Circle Area |
|---|---|
| 1 units | 3.1416 sq units |
| 2 units | 12.5664 sq units |
| 3 units | 28.2743 sq units |
| 4 units | 50.2655 sq units |
| 5 units | 78.5398 sq units |
| 6 units | 113.0973 sq units |
| 7 units | 153.938 sq units |
| 8 units | 201.0619 sq units |
| 9 units | 254.469 sq units |
| 10 units | 314.1593 sq units |
| 11 units | 380.1327 sq units |
| 12 units | 452.3893 sq units |
| 13 units | 530.9292 sq units |
| 14 units | 615.7522 sq units |
| 15 units | 706.8583 sq units |
| 16 units | 804.2477 sq units |
| 17 units | 907.9203 sq units |
| 18 units | 1,017.876 sq units |
| 19 units | 1,134.1149 sq units |
| 20 units | 1,256.6371 sq units |
Frequently Asked Questions
Common questions about Circle Area from Radius, formulas, and typical use cases.
What does the Circle Area from Radius calculator do?
It calculates finding surface coverage for circular plates, pipes, and round cutouts from the values you enter.
What formula does the Circle Area from Radius calculator use?
Area = π × radius².
What inputs are valid?
Enter a positive radius greater than zero.
When would I use this?
finding surface coverage for circular plates, pipes, and round cutouts
Methodology and Review
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