Simplify square root of 648

$\sqrt{648}$

Step 1

Rewrite $648$ as $18^{2} \cdot 2$ .

Factor $324$ out of $648$ .

$\sqrt{324 (2)}$

Rewrite $324$ as $18^{2}$ .

$\sqrt{18^{2} \cdot 2}$

$\sqrt{18^{2} \cdot 2}$

Step 2

Pull terms out from under the radical.

$18 \sqrt{2}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$18 \sqrt{2}$

Decimal Form:

$25.45584412 \dots$

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