√866 = 29.4278779391. 866 is not a perfect square; the result is irrational.

Is 866 a perfect square?

No, 866 is not a perfect square. Its square root is irrational.

What is 29.4278779391 squared?

29.4278779391 squared is approximately 866. (29.4278779391)² ≈ 866

Instant answer with step-by-step solution

√866 = 29.4278779391

√866 = 29.4278779391

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

We need to find √866 — a number that when multiplied by itself equals 866.
866 is not a perfect square. Its square root is irrational.
It falls between √841 = 29 and √900 = 30.
Using the formula √N = N^(1/2): √866 = 866^0.5 = 29.4278779391
Verification: 29.4278779391 × 29.4278779391 ≈ 866 ✓ (rounded to 10 significant figures)

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