Square root of 15
The square root of 15 is 3.872983 (rounded to 6 decimal places). It cannot be simplified.
Square root of 15
Pick any whole number from 1 to 10,000.
How to work it out
- 1
The square root of 15 is the number that multiplied by itself gives 15.
- 2
15 is between the perfect squares 3² = 9 and 4² = 16, so its square root is between 3 and 4.
- 3
15 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
\[ \sqrt{15} = \sqrt{15} \approx 3.872983 \]
\[ \sqrt{15} \]
\[ \sqrt{15} \approx 3.872983 \]Squares around 15
| Number | Squared |
|---|---|
| 2 | 4 |
| 3 | 9 |
| 4 | 16 |
| 5 | 25 |
Questions
What is the square root of 15?
The square root of 15 is 3.872983 (rounded to 6 decimal places). It cannot be simplified.
Is 15 a perfect square?
No. It lies between 3² = 9 and 4² = 16.
What is 15 squared?
15 × 15 = 225.
What is the square root of 15 rounded to 2 decimals?
3.87.