√155 = 12.449899598. 155 is not a perfect square; the result is irrational.

Is 155 a perfect square?

No, 155 is not a perfect square. Its square root is irrational.

What is 12.449899598 squared?

12.449899598 squared is approximately 155. (12.449899598)² ≈ 155

Instant answer with step-by-step solution

√155 = 12.449899598

√155 = 12.449899598

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

We need to find √155 — a number that when multiplied by itself equals 155.
155 is not a perfect square. Its square root is irrational.
It falls between √144 = 12 and √169 = 13.
Using the formula √N = N^(1/2): √155 = 155^0.5 = 12.449899598
Verification: 12.449899598 × 12.449899598 ≈ 155 ✓ (rounded to 10 significant figures)

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