Quick Answer

√400

√400 = 20. The square root of 400 is the number that, when multiplied by itself, equals 400. √400 = 20.

√400 = 20

How to Calculate √400

The square root of 400 is the number that, when multiplied by itself, equals 400. √400 = 20.

Find x where x² = 400√400 = 20

Verification20 × 20 ≈ 400

√400 = 20

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