Because a mile is 1760 yards and there are 3 feet in a yard.
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1 mile = 5280 ft. So set up a proportion and you will get: 1 mile/5280 ft = x miles/ 16300 ft. Divide 16300 by 5280 and you should get approx. 0.309 miles (to the correct number of significant digits).
The basic concept of the mile originated in Roman times. The Romans used a unit of distance called the mille passum, which literally translated into "a thousand paces." Since each pace was considered to be five Roman feet—which were a bit shorter than our modern feet—the mile ended up being 5,000 Roman feet, or roughly 4,850 of our modern feet. If the mile originated with 5,000 Roman feet, how did we end up with a mile that is 5,280 feet? Blame the furlong. The furlong wasn't always just an arcane unit of measure that horseracing fans gabbed about; it once had significance as the length of the furrow a team of oxen could plow in a day. In 1592, Parliament set about determining the length of the mile and decided that each one should be made up of eight furlongs. Since a furlong was 660 feet, we ended up with a 5,280-foot mile.
set up conversion ratios: 1 mile = 5,280 feet 1 foot = 12 inches 24 miles * ( 5,280 ft / 1 mile) * (12 inches / 1 ft) 24*5280*12 = 1,520,640 inches
(74.25 ft/sec) * (mile/5280 ft) * (60 sec/min) * (60 min/hr) You have to set it up with feet in the denominator to cancel feet in the numerator (so divide by 5280 to get miles per second); then seconds in the numerator to cancel the second in the denominator to get miles per minute; then minutes in the numerator to cancel minite in the denominator to get miles per hour. Along with setting up the units of measure, put the appropriate numbers with the units. From there, all you have to do is take 74.25, divide by 5280, multiply by 60, and multiply by 60 again.
Length times width. If you have something 2 feet long by 2 feet wide it is 4 square feet. A foot is one dimensional measurement. A square foot is 2-dimensional and is a square unit footxfoot. (ft2) There is no set amount of feet in a square foot, because square feet is a measure of area and feet are a measure of length.