√455 = 21.3307290077. 455 is not a perfect square; the result is irrational.

Is 455 a perfect square?

No, 455 is not a perfect square. Its square root is irrational.

What is 21.3307290077 squared?

21.3307290077 squared is approximately 455. (21.3307290077)² ≈ 455

Instant answer with step-by-step solution

√455 = 21.3307290077

√455 = 21.3307290077

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

We need to find √455 — a number that when multiplied by itself equals 455.
455 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): √455 = 455^0.5 = 21.3307290077
Verification: 21.3307290077 × 21.3307290077 ≈ 455 ✓ (rounded to 10 significant figures)

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