3 miles
(3 miles) x (1,760 yards per mile) = 5,280yards
3 yd = 9 ft
108
3 miles
9
3 ft
1 yd. equals 3 ft.
There are 3 ft in 1 yd ... SO (3 ft/yd) x 1760 yd = 5,280 ft (which equals 1 US mile)
It equals 219 because there are 3 ft in a yd. :P
18 feet
6 inches is 1/2 foot, and 1 yd = 3 ft: (4.5 ft)/ (3 ft/yd) = 1.5 yd