Evaluate square root of 9640.25

$\sqrt{9 \cdot 64 \cdot 0.25}$

Multiply.

Multiply $9$ by $64$ .

$\sqrt{576 \cdot 0.25}$

Multiply $576$ by $0.25$ .

$\sqrt{144}$

Rewrite $144$ as $12^{2}$ .

$\sqrt{12^{2}}$

Pull terms out from under the radical, assuming positive real numbers.

$12$

Evaluate square root of 9*64*0.25