√135 ≈ 11.6190
√135 is an irrational number, so its decimals never end or repeat. It sits between 11 and 12 because 11² = 121 and 12² = 144.
| Decimal places | Value |
|---|---|
| 0 | 12 |
| 1 | 11.6 |
| 2 | 11.62 |
| 3 | 11.619 |
| 4 | 11.6190 |
| 5 | 11.61895 |
| 10 (digits) | 11.6189500386 |
135 = 9 × 15 and √9 = 3, so √135 = 3√15.
11.6190 × 11.6190 ≈ 135.0012, which is very close to 135.
Need another number? Use the square root calculator (also cube roots and other roots).
| Number | Square root |
|---|---|
| 131 | 11.4455 |
| 132 | 11.4891 |
| 133 | 11.5326 |
| 134 | 11.5758 |
| 136 | 11.6619 |
| 137 | 11.7047 |
| 138 | 11.7473 |
| 139 | 11.7898 |