Problem
$(4)$ 6. Commercial airplanes often fly around $30000 \mathrm{ft}$ above sea level. How many miles above sea level is $30000 \mathrm{ft}$, to the nearest tenth of a mile? \[ \text { 30000 Et. }= \]
Solution
Step 1 ：Convert 30000 feet to miles: \(\frac{30000}{5280}\)
Step 2 ：Calculate the result and round to the nearest tenth: \(\boxed{5.7}\) miles
