√255 = 15.9687194227. 255 is not a perfect square; the result is irrational.

Is 255 a perfect square?

No, 255 is not a perfect square. Its square root is irrational.

What is 15.9687194227 squared?

15.9687194227 squared is approximately 255. (15.9687194227)² ≈ 255

Instant answer with step-by-step solution

√255 = 15.9687194227

√255 = 15.9687194227

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

We need to find √255 — a number that when multiplied by itself equals 255.
255 is not a perfect square. Its square root is irrational.
It falls between √225 = 15 and √256 = 16.
Using the formula √N = N^(1/2): √255 = 255^0.5 = 15.9687194227
Verification: 15.9687194227 × 15.9687194227 ≈ 255 ✓ (rounded to 10 significant figures)

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