# [Jelly][1], 4 [bytes][2]

 _²S½

[Try it online!][3]

### How it works

 _²S½ Main link. Left input: A (list). Right input: B (list).

 _ Subtract B from A, element by element.
 ² Square all differences.
 S Add all squares.
 ½ Take the square root of the sum.

[1]: https://github.com/DennisMitchell/jelly
[2]: https://github.com/DennisMitchell/jelly/blob/master/docs/code-page.md
[3]: http://jelly.tryitonline.net/#code=X8KyU8K9&input=&args=WzEzLjM3LDIsNiwtN10+WzEuMiwzLjQsLTUuNiw3Ljg5XQ