√678 = 26.0384331326. 678 is not a perfect square; the result is irrational.

Is 678 a perfect square?

No, 678 is not a perfect square. Its square root is irrational.

What is 26.0384331326 squared?

26.0384331326 squared is approximately 678. (26.0384331326)² ≈ 678

Instant answer with step-by-step solution

√678 = 26.0384331326

√678 = 26.0384331326

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

We need to find √678 — a number that when multiplied by itself equals 678.
678 is not a perfect square. Its square root is irrational.
It falls between √676 = 26 and √729 = 27.
Using the formula √N = N^(1/2): √678 = 678^0.5 = 26.0384331326
Verification: 26.0384331326 × 26.0384331326 ≈ 678 ✓ (rounded to 10 significant figures)

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