The square root of 420 calculated to 10 decimal places.
| Number | Square Root | Perfect Square? |
|---|---|---|
| 415 | 20.3715487875 | No |
| 416 | 20.3960780544 | No |
| 417 | 20.4205778567 | No |
| 418 | 20.4450483003 | No |
| 419 | 20.4694894905 | No |
| 420 | 20.4939015319 | No |
| 421 | 20.5182845287 | No |
| 422 | 20.5426385842 | No |
| 423 | 20.5669638012 | No |
| 424 | 20.5912602820 | No |
| 425 | 20.6155281281 | No |
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