√77 = 8.7749643874. 77 is not a perfect square; the result is irrational.

Is 77 a perfect square?

No, 77 is not a perfect square. Its square root is irrational.

What is 8.7749643874 squared?

8.7749643874 squared is approximately 77. (8.7749643874)² ≈ 77

Instant answer with step-by-step solution

√77 = 8.7749643874

√77 = 8.7749643874

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

We need to find √77 — a number that when multiplied by itself equals 77.
77 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): √77 = 77^0.5 = 8.7749643874
Verification: 8.7749643874 × 8.7749643874 ≈ 77 ✓ (rounded to 10 significant figures)

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