Answer
$ 5.6 \times 10 ^7 m$
Work Step by Step
We convert to meters:
$56 \times 10^6 m$
To convert to scientific notation, move the decimal to the right or left, counting the number of times that you do so, until you get a number that is at least 1 but that is less than 10. If you moved the decimal right, the number of times the decimal is moved will be negative, while moving left yields a positive number. Then, raise 10 to that number. This gives:
$ 5.6 \times 10 ^7 m$