√47 ≈ 6.8557
√47 is an irrational number, so its decimals never end or repeat. It sits between 6 and 7 because 6² = 36 and 7² = 49.
| Decimal places | Value |
|---|---|
| 0 | 7 |
| 1 | 6.9 |
| 2 | 6.86 |
| 3 | 6.856 |
| 4 | 6.8557 |
| 5 | 6.85565 |
| 10 (digits) | 6.8556546004 |
47 has no perfect-square factor other than 1, so √47 is already in simplest radical form.
6.8557 × 6.8557 ≈ 47.0006, which is very close to 47.
Need another number? Use the square root calculator (also cube roots and other roots).
| Number | Square root |
|---|---|
| 43 | 6.5574 |
| 44 | 6.6332 |
| 45 | 6.7082 |
| 46 | 6.7823 |
| 48 | 6.9282 |
| 49 | 7 |
| 50 | 7.0711 |
| 51 | 7.1414 |