How many kilometers is $ 1.7 $ miles?

Hint: Convert the given value in the required specific units by using the conversion equation. Use the formula - $ 1{\text{ mile}} = 1.60934\,kilometer $ Place the relation for the given number and simplify the equation using the basic mathematical calculations.

Complete step-by-step answer:
We know the basic relation between miles and kilometers.
 $ 1{\text{ mile}} = 1.60934\,kilometer $
Place for the given number -
 $ 1.7{\text{ miles = 1}}{\text{.60934}} \times {\text{1}}{\text{.7 }} $ kilometres
Simplify the above equation finding the product of the terms in the above expression –
 $ 1.7{\text{ miles = 2}}{\text{.73588}} $ kilometres
This is the required solution.
So, the correct answer is “2.73588 Km”.

Note: It is very important to know the difference between the system of units and the conversional ratios between them. Since if we say mass of one it does not make any sense, also length of one feet and one meter differs a lot.