$$\sqrt{ \frac{ 4 \times 4 \times 427 \times 27 }{ 36 \times 36 } }$$
$\frac{\sqrt{1281}}{3}\approx 11.930353445$
$$\sqrt{\frac{427}{3}}$$
$$\frac{\sqrt{427}}{\sqrt{3}}$$
$$\frac{\sqrt{427}\sqrt{3}}{\left(\sqrt{3}\right)^{2}}$$
$$\frac{\sqrt{427}\sqrt{3}}{3}$$
$$\frac{\sqrt{1281}}{3}$$
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