What is the Square Root of 42?

Instant answer with step-by-step solution

√42 = 6.4807406984
√42 = 6.4807406984
⚠ 42 is not a perfect square — result rounded to 10 significant figures

Step-by-step explanation

  1. We need to find √42 — a number that when multiplied by itself equals 42.
  2. 42 is not a perfect square. Its square root is irrational.
  3. It falls between √36 = 6 and √49 = 7.
  4. Using the formula √N = N^(1/2): √42 = 42^0.5 = 6.4807406984
  5. Verification: 6.4807406984 × 6.4807406984 ≈ 42 ✓ (rounded to 10 significant figures)

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