Square Root of 18 (√18 = 4.242641)

Exact Answer

√18 = 4.242641

Principal Root (√18)

4.242641

Real Roots

±4.242641

Perfect Square?

No (Irrational)

Exponential Form

18^(1/2)

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Step-by-Step Solution: √18 = 4.242641

Step 1

Definition of Square Root

The square root of 18 is the number y such that y × y = 18.

√18 = 4.242641

Summary & Alternative Representations

Property / Format	Value
Principal Root (√18)	`4.242641`
Real Roots	`±4.242641`
Perfect Square?	`No (Irrational)`
Exponential Form	`18^(1/2)`

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Frequently Asked Questions

Is 18 a perfect square?

No, 18 is not a perfect square; its decimal approximation is 4.242641.