This pentagon reference table shows the area for a range of side length values. Every figure is computed with the same engine that powers our Pentagon Calculator, so the numbers are exact.
| Side length | Area | Perimeter |
|---|---|---|
| 1.5 units | 3.8711 | 7.5000 |
| 3 units | 15.4843 | 15.0000 |
| 4.5 units | 34.8397 | 22.5000 |
| 6 units | 61.9372 | 30.0000 |
| 9 units | 139.3587 | 45.0000 |
| 12 units | 247.7487 | 60.0000 |
| 18 units | 557.4347 | 90.0000 |
| 30 units | 1,548.4297 | 150.0000 |
| 42 units | 3,034.9221 | 210.0000 |
| 60 units | 6,193.7186 | 300.0000 |
How to use this table
Find the row closest to your side length and read across to the area. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Pentagon Calculator for a precise answer.
Need a value that is not in the table? — the Pentagon Calculator does it instantly, for free, with the formula and a worked example built in.
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