Evaluate 3 square root of 729

$3 \sqrt{729}$

Step 1

Rewrite $729$ as $27^{2}$ .

$3 \sqrt{27^{2}}$

Step 2

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

$3 \cdot 27$

Step 3

Multiply $3$ by $27$ .

$81$

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