Square Root of 421 (√421 = 20.518285)

Exact Answer

√421 = 20.518285

Principal Root (√421)

20.518285

Real Roots

±20.518285

Perfect Square?

No (Irrational)

Exponential Form

421^(1/2)

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Step-by-Step Solution: √421 = 20.518285

Step 1

Definition of Square Root

The square root of 421 is the number y such that y × y = 421.

√421 = 20.518285

Summary & Alternative Representations

Property / Format	Value
Principal Root (√421)	`20.518285`
Real Roots	`±20.518285`
Perfect Square?	`No (Irrational)`
Exponential Form	`421^(1/2)`

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Frequently Asked Questions

Is 421 a perfect square?

No, 421 is not a perfect square; its decimal approximation is 20.518285.