This regular decagon area reference table shows the area for a range of side length values. Every figure is computed with the same engine that powers our Regular Decagon Area Calculator, so the numbers are exact.
| Side length | Area | Perimeter |
|---|---|---|
| 2.5 | 48.0888 | 25.00 |
| 5 | 192.3552 | 50.00 |
| 7.5 | 432.7992 | 75.00 |
| 10 | 769.4209 | 100.00 |
| 15 | 1,731.1970 | 150.00 |
| 20 | 3,077.6835 | 200.00 |
| 30 | 6,924.7880 | 300.00 |
| 50 | 19,235.5221 | 500.00 |
| 70 | 37,701.6233 | 700.00 |
| 100 | 76,942.0884 | 1,000.00 |
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 Regular Decagon Area Calculator for a precise answer.
Need a value that is not in the table? — the Regular Decagon Area Calculator does it instantly, for free, with the formula and a worked example built in.
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