Square Root Calculator › Square root of 381
Square Root of 381
√381 ≈ 19.519221
381 is not a perfect square, so √381 is an irrational number that is approximately 19.519221. In simplified radical form, √381 = √381.
√381 lies between √361 = 19 and √400 = 20.
| Number | 381 |
| Square root (decimal) | 19.519221 |
| Simplified radical | √381 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 381 a perfect square?
No, 381 is not a perfect square, so its square root is irrational and approximately 19.519221.
What is the square root of 381 in simplest radical form?
√381 = √381 in simplest radical form.