Question

How many kilometers is 1.7 miles?

Answer 1

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 * 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.