Question

How many feet in $3$ miles?

Answer 1

Hint:
Whenever they ask to convert from one unit of distance or length to another unit, first you should be having knowledge on unit definition. A mile can be represented in terms of furlongs, that is each mile has $8$furlongs, and each furlong has $220$ yards, and each yard has $3$ feet in it. So by using these we can arrive at the correct answer.

Complete Step by Step Solution:
Mile is a unit of length. Apart from miles there are other units as well for example, kilometer, meter, centimeter, feet, furlong, yard and many.
In order to find how many feet for $3$ miles we should have some conversion knowledge.
Now, we should know how a single mile can be represented.
So, each mile can be represented in terms of furlong, that is a mile has $8$furlongs.
Again furlong can be represented in terms of yards. Each furlong has $220$ yards in it.
Again the Yard can be represented in terms of feet. Each yard has $3$ feet.
So now to convert a mile to feet we have as below:
For a single mile,
$1$ Mile = $8 \times 220 \times 3$
$ \Rightarrow 1$ Mile = $5280$ feet.
Therefore, for $3$ miles,
$3$ Mile = $5280 \times 3$ feet
$ \Rightarrow 3$ Mile = $15840$ feet.

Hence $3$ Mile has $15840$ feet.

Note:
In the given question they have asked to convert miles to feet, whatever we followed in the above procedure is not only the way. We have other ways also like if you know how many feet for a single mile directly you can calculate the required number of miles.