We want to express 3 miles in feet.
3 mi≈ ft
We can do this by using the fact that 1 mile equals 5280 feet. Let's write this relationship as a unit ratio.
5280 ft/1mi
To perform the conversion, we need to multiply 3 miles by the unit ratio or its reciprocal. Remember, we want to get the distance in feet, and every unit we do not want has to be divided out.
We found that 3 miles is equal to 15 840 feet. We can now complete the given statement.
3 mi= 15 840 ft
Extra
Common Conversion Factors
The following tool can be used to help you explore some of the most commonly used conversion factors. Conversions can be made both within or between the Metric System and the Imperial System — which is also known as the U.S. Customary System.
Around the world, people use conversion factors on a regular basis. You can read more about some practical applications of conversion factors in our original content.
