This sector area reference table shows the sector area for a range of radius values, assuming a central angle of 90 degrees. Every figure is computed with the same engine that powers our Sector Area Calculator, so the numbers are exact.
| Radius | Sector area |
|---|---|
| 1.5 units | 1.7671 |
| 3 units | 7.0686 |
| 4.5 units | 15.9043 |
| 6 units | 28.2743 |
| 9 units | 63.6173 |
| 12 units | 113.0973 |
| 18 units | 254.4690 |
| 30 units | 706.8583 |
| 42 units | 1,385.4424 |
| 60 units | 2,827.4334 |
How to use this table
Find the row closest to your radius and read across to the sector area. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Sector Area Calculator for a precise answer.
Need a value that is not in the table? — the Sector Area Calculator does it instantly, for free, with the formula and a worked example built in.
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