Square root of 4455

The square root of 4455 is 66.745786 (rounded to 6 decimal places). In simplest radical form it is 9√55.

Square root of 4455

Pick any whole number from 1 to 10,000.

\sqrt{4455} = 9\sqrt{55} \approx 66.745786

How to work it out

1
The square root of 4455 is the number that multiplied by itself gives 4455.
2
4455 is between the perfect squares 66² = 4356 and 67² = 4489, so its square root is between 66 and 67.
3
Pull out the biggest square factor: 4455 = 81 × 55, so
$\sqrt{4455} = \sqrt{81 \times 55} = 9\sqrt{55}$
4
A calculator, or long division of digits, gives
$\sqrt{4455} \approx 66.745786$

LaTeX source of the formulas on this page

\[ \sqrt{4455} = 9\sqrt{55} \approx 66.745786 \]
\[ \sqrt{4455} = \sqrt{81 \times 55} = 9\sqrt{55} \]
\[ \sqrt{4455} \approx 66.745786 \]

What is the square root of 4455?

The square root of 4455 is 66.745786 (rounded to 6 decimal places). In simplest radical form it is 9√55.

Is 4455 a perfect square?

No. It lies between 66² = 4356 and 67² = 4489.

What is 4455 squared?

4455 × 4455 = 19847025.

What is the square root of 4455 rounded to 2 decimals?

66.75.