Square Roots: 21
The square root of 21 is about 4.5826. Square roots reverse squaring and are essential in geometry and the quadratic formula.
| Expression | Value |
|---|---|
| √21 | 4.582576 |
The square root of 21 is about 4.5826. Square roots reverse squaring and are essential in geometry and the quadratic formula.
| Expression | Value |
|---|---|
| √21 | 4.582576 |