Square root of 1821
The square root of 1821 is 42.673177 (rounded to 6 decimal places). It cannot be simplified.
Square root of 1821
Pick any whole number from 1 to 10,000.
How to work it out
- 1
The square root of 1821 is the number that multiplied by itself gives 1821.
- 2
1821 is between the perfect squares 42² = 1764 and 43² = 1849, so its square root is between 42 and 43.
- 3
1821 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
\[ \sqrt{1821} = \sqrt{1821} \approx 42.673177 \]
\[ \sqrt{1821} \]
\[ \sqrt{1821} \approx 42.673177 \]Squares around 1821
| Number | Squared |
|---|---|
| 41 | 1681 |
| 42 | 1764 |
| 43 | 1849 |
| 44 | 1936 |
Questions
What is the square root of 1821?
The square root of 1821 is 42.673177 (rounded to 6 decimal places). It cannot be simplified.
Is 1821 a perfect square?
No. It lies between 42² = 1764 and 43² = 1849.
What is 1821 squared?
1821 × 1821 = 3316041.
What is the square root of 1821 rounded to 2 decimals?
42.67.