Square Root Calculator › Square root of 378
Square Root of 378
√378 ≈ 19.442222
378 is not a perfect square, so √378 is an irrational number that is approximately 19.442222. In simplified radical form, √378 = 3√42.
√378 lies between √361 = 19 and √400 = 20.
| Number | 378 |
| Square root (decimal) | 19.442222 |
| Simplified radical | 3√42 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 378 a perfect square?
No, 378 is not a perfect square, so its square root is irrational and approximately 19.442222.
What is the square root of 378 in simplest radical form?
√378 = 3√42 in simplest radical form.