$$= 5.5 \sqrt { ( 0.6 \times 50 ) + \frac { 30000 } { 100 } }$$
$\frac{11\sqrt{330}}{2}\approx 99.912461685$
$$5.5\sqrt{30+\frac{30000}{100}}$$
$$5.5\sqrt{30+300}$$
$$5.5\sqrt{330}$$
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