√840 = 28.9827534924. 840 is not a perfect square; the result is irrational.

Is 840 a perfect square?

No, 840 is not a perfect square. Its square root is irrational.

What is 28.9827534924 squared?

28.9827534924 squared is approximately 840. (28.9827534924)² ≈ 840

Instant answer with step-by-step solution

√840 = 28.9827534924

√840 = 28.9827534924

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

We need to find √840 — a number that when multiplied by itself equals 840.
840 is not a perfect square. Its square root is irrational.
It falls between √784 = 28 and √841 = 29.
Using the formula √N = N^(1/2): √840 = 840^0.5 = 28.9827534924
Verification: 28.9827534924 × 28.9827534924 ≈ 840 ✓ (rounded to 10 significant figures)

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