√78 = 8.8317608663. 78 is not a perfect square; the result is irrational.

Is 78 a perfect square?

No, 78 is not a perfect square. Its square root is irrational.

What is 8.8317608663 squared?

8.8317608663 squared is approximately 78. (8.8317608663)² ≈ 78

Instant answer with step-by-step solution

√78 = 8.8317608663

√78 = 8.8317608663

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

We need to find √78 — a number that when multiplied by itself equals 78.
78 is not a perfect square. Its square root is irrational.
It falls between √64 = 8 and √81 = 9.
Using the formula √N = N^(1/2): √78 = 78^0.5 = 8.8317608663
Verification: 8.8317608663 × 8.8317608663 ≈ 78 ✓ (rounded to 10 significant figures)

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