Square root of 78
The square root of 78 is 8.831761 (rounded to 6 decimal places). It cannot be simplified.
Square root of 78
Pick any whole number from 1 to 10,000.
How to work it out
- 1
The square root of 78 is the number that multiplied by itself gives 78.
- 2
78 is between the perfect squares 8² = 64 and 9² = 81, so its square root is between 8 and 9.
- 3
78 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
\[ \sqrt{78} = \sqrt{78} \approx 8.831761 \]
\[ \sqrt{78} \]
\[ \sqrt{78} \approx 8.831761 \]Squares around 78
| Number | Squared |
|---|---|
| 7 | 49 |
| 8 | 64 |
| 9 | 81 |
| 10 | 100 |
Questions
What is the square root of 78?
The square root of 78 is 8.831761 (rounded to 6 decimal places). It cannot be simplified.
Is 78 a perfect square?
No. It lies between 8² = 64 and 9² = 81.
What is 78 squared?
78 × 78 = 6084.
What is the square root of 78 rounded to 2 decimals?
8.83.