The square root of 221 calculated to 10 decimal places.
| Number | Square Root | Perfect Square? |
|---|---|---|
| 216 | 14.6969384567 | No |
| 217 | 14.7309198627 | No |
| 218 | 14.7648230602 | No |
| 219 | 14.7986485869 | No |
| 220 | 14.8323969742 | No |
| 221 | 14.8660687473 | No |
| 222 | 14.8996644258 | No |
| 223 | 14.9331845231 | No |
| 224 | 14.9666295471 | No |
| 225 | 15 | Yes |
| 226 | 15.0332963784 | No |
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