79,200 ft
Algebraic Steps / Dimensional Analysis Formula 15 mi*5280 ft
1 mi=79,200 ft
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9 mi = 47,520 ft
1.2 mi = 6,336 ft
36,960 ft.
4.5 mi Algebraic Steps / Dimensional Analysis23,760 ft*1 mi 5280 ft=4.5 mi
200 ft in 15 seconds ~= 13.333 ft/s 13.333 ft/s * 3600 s/hr / 5280 mi/ft ~= 9.091 mph