√456 = 21.3541565041. 456 is not a perfect square; the result is irrational.

Is 456 a perfect square?

No, 456 is not a perfect square. Its square root is irrational.

What is 21.3541565041 squared?

21.3541565041 squared is approximately 456. (21.3541565041)² ≈ 456

Instant answer with step-by-step solution

√456 = 21.3541565041

√456 = 21.3541565041

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

We need to find √456 — a number that when multiplied by itself equals 456.
456 is not a perfect square. Its square root is irrational.
It falls between √441 = 21 and √484 = 22.
Using the formula √N = N^(1/2): √456 = 456^0.5 = 21.3541565041
Verification: 21.3541565041 × 21.3541565041 ≈ 456 ✓ (rounded to 10 significant figures)

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