Semicircle Area from Radius
Calculate semicircle area from radius using A = (1/2)πr².
Table of Contents
15 units =
353.429174 sq units
Representative value from the Semicircle Area from Radius reference table.
Reference Values
Browse 20 reference values with individual detail pages for quick lookup.
Semicircle Area from Radius
Calculate semicircle area from radius using A = (1/2)πr².
Calculated Result
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Reference Table
Use this complete table for quick lookup and internal linking to specific value pages.
| Radius | Semicircle Area |
|---|---|
| 0.5 units | 0.392699 sq units |
| 1 units | 1.570796 sq units |
| 1.5 units | 3.534292 sq units |
| 2.5 units | 9.817477 sq units |
| 4 units | 25.132741 sq units |
| 5 units | 39.269908 sq units |
| 6 units | 56.548668 sq units |
| 7.5 units | 88.357293 sq units |
| 10 units | 157.079633 sq units |
| 12.5 units | 245.436926 sq units |
| 15 units | 353.429174 sq units |
| 20 units | 628.318531 sq units |
| 25 units | 981.747704 sq units |
| 37.5 units | 2,208.932335 sq units |
| 50 units | 3,926.990817 sq units |
| 62.5 units | 6,135.923152 sq units |
| 75 units | 8,835.729338 sq units |
| 100 units | 15,707.963268 sq units |
| 125 units | 24,543.692606 sq units |
| 150 units | 35,342.917353 sq units |
Frequently Asked Questions
Common questions about Semicircle Area from Radius, formulas, and typical use cases.
What does the Semicircle Area from Radius calculator do?
It helps with estimating half-circle area for arches, cutouts, and geometry problems.
What formula does the Semicircle Area from Radius calculator use?
Semicircle area = (1/2) × π × radius².
What inputs are valid?
Radius must be zero or greater. Physical values are typically positive.
When would I use this?
estimating half-circle area for arches, cutouts, and geometry problems
Methodology and Review
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