Semicircle Area from Radius Reference Values
Calculate semicircle area from radius using A = (1/2)πr².
Table of Contents
Reference Value Index
This page lists 20 reference values for quick browsing and lookup.
All Reference Values
- 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
Reference Table
| 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
Frequently asked questions for Semicircle Area from Radius and its reference values.
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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