How do you convert 8.6 miles to m.

Hint: In order to solve this question we need to know the conversion of the miles to the meter for which we should know the conversion formula from miles to m. And let me tell you that in one miles there are 1609.344 meters.

Complete step-by-step answer:
For solving this type of question we need to know the relation between miles and meters.
It originated from the Roman mile passus which measured 5,000 Roman feet. About the year 1500 the “old London” mile was defined as eight furlongs. At that time the furlong, measured by a larger northern (German) foot, was 625 feet, and thus the mile equaled 5,000 feet.
Generally we need to know that we need any one parameter to measure the quantity which is S.I units. It is because all the countries will have their own measuring parameter so to make it universal we need the S.I unit.
The International System of Units, universally abbreviated SI, is the modern metric system of measurement. The SI was established in 1960 by the 11th General Conference on Weights and Measures. The CGPM is the international authority that ensures wide dissemination of the SI and modifies the SI as necessary to reflect the latest advances in science and technology.
we know that
 \[
1{\text{ }}miles = 1609.344;m \\
8{\text{ miles = 8}} \times {\text{1609}}{\text{.344}} \;
\]
on further solving we get
 \[8.6{\text{ }}miles = 13840.3584{\text{ }}m\]
There are 13840.3584 m in 8.6 miles.
So, the correct answer is “13840.3584 m”.

Note: These types of questions are direct formula based and we need not to think about it only have to remember the basic formula and will have to put in it. 1 km is equal to 1000 m and similarly there are many unit conversions that we can apply to convert miles to km too.