Square root of 66
The square root of 66 is 8.124038 (rounded to 6 decimal places). It cannot be simplified.
Square root of 66
Pick any whole number from 1 to 10,000.
How to work it out
- 1
The square root of 66 is the number that multiplied by itself gives 66.
- 2
66 is between the perfect squares 8² = 64 and 9² = 81, so its square root is between 8 and 9.
- 3
66 has no square factor bigger than 1, so the radical stays as it is.
- 4
A calculator, or long division of digits, gives
LaTeX source of the formulas on this page
\[ \sqrt{66} = \sqrt{66} \approx 8.124038 \]
\[ \sqrt{66} \]
\[ \sqrt{66} \approx 8.124038 \]Squares around 66
| Number | Squared |
|---|---|
| 7 | 49 |
| 8 | 64 |
| 9 | 81 |
| 10 | 100 |
Questions
What is the square root of 66?
The square root of 66 is 8.124038 (rounded to 6 decimal places). It cannot be simplified.
Is 66 a perfect square?
No. It lies between 8² = 64 and 9² = 81.
What is 66 squared?
66 × 66 = 4356.
What is the square root of 66 rounded to 2 decimals?
8.12.