$$4 \sqrt{ 4 \div 446 }$$
$\frac{4\sqrt{446}}{223}\approx 0.378810979$
$$4\sqrt{\frac{2}{223}}$$
$$4\times \frac{\sqrt{2}}{\sqrt{223}}$$
$$4\times \frac{\sqrt{2}\sqrt{223}}{\left(\sqrt{223}\right)^{2}}$$
$$4\times \frac{\sqrt{2}\sqrt{223}}{223}$$
$$4\times \frac{\sqrt{446}}{223}$$
$$\frac{4\sqrt{446}}{223}$$
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