√139 = 11.7898261226. 139 is not a perfect square; the result is irrational.

Is 139 a perfect square?

No, 139 is not a perfect square. Its square root is irrational.

What is 11.7898261226 squared?

11.7898261226 squared is approximately 139. (11.7898261226)² ≈ 139

Instant answer with step-by-step solution

√139 = 11.7898261226

√139 = 11.7898261226

⚠ 139 is not a perfect square — result rounded to 10 significant figures

We need to find √139 — a number that when multiplied by itself equals 139.
139 is not a perfect square. Its square root is irrational.
It falls between √121 = 11 and √144 = 12.
Using the formula √N = N^(1/2): √139 = 139^0.5 = 11.7898261226
Verification: 11.7898261226 × 11.7898261226 ≈ 139 ✓ (rounded to 10 significant figures)

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