What is the Square Root of 20?
The square root of 20 (√20) is 4.472136. 20 is an irrational square root rounded to 4.472136.
Exact Answer
√20 = 4.472136
Principal Root (√20)
4.472136
Real Roots
±4.472136
Perfect Square?
No (Irrational)
Exponential Form
20^(1/2)
Step-by-Step Solution: √20 = 4.472136
Step 1
Definition of Square Root
The square root of 20 is the number y such that y × y = 20.
√20 = 4.472136
Summary & Alternative Representations
| Property / Format | Value |
|---|---|
| Principal Root (√20) | 4.472136 |
| Real Roots | ±4.472136 |
| Perfect Square? | No (Irrational) |
| Exponential Form | 20^(1/2) |
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Frequently Asked Questions
Is 20 a perfect square?
No, 20 is not a perfect square; its decimal approximation is 4.472136.