√170 ≈ 13.0384
√170 is an irrational number, so its decimals never end or repeat. It sits between 13 and 14 because 13² = 169 and 14² = 196.
| Decimal places | Value |
|---|---|
| 0 | 13 |
| 1 | 13.0 |
| 2 | 13.04 |
| 3 | 13.038 |
| 4 | 13.0384 |
| 5 | 13.03840 |
| 10 (digits) | 13.0384048104 |
170 has no perfect-square factor other than 1, so √170 is already in simplest radical form.
13.0384 × 13.0384 ≈ 169.9999, which is very close to 170.
Need another number? Use the square root calculator (also cube roots and other roots).
| Number | Square root |
|---|---|
| 166 | 12.8841 |
| 167 | 12.9228 |
| 168 | 12.9615 |
| 169 | 13 |
| 171 | 13.0767 |
| 172 | 13.1149 |
| 173 | 13.1529 |
| 174 | 13.1909 |