# How many kilometers is 1.7 miles?

Oct 15, 2016

If exact, then $2.7358848$ kilometers, so to $2$ significant figures that is $2.7$ kilometers.

#### Explanation:

There are exactly $1.609344$ kilometers in a mile by definition.

So if the figure $1.7$ miles is precise, then in kilometers it is:

$1.7 \cdot 1.609344 = 2.7358848$

If the figure given is only accurate to $2$ significant figures, then we should only quote the answer to $2$ significant figures too.

So $1.7$ miles is approximately $2.7$ kilometers.