Khan/khan-exercises — pull request #53485 by petercollingridge (2013-07-12 16:23:49+00:00)
Title: Square roots 3

Write the square root of a non-perfect square. Based on square roots 1.
For Trello card:
https://trello.com/card/square-roots-square-roots-2-cube-roots/5166dc745b4dc7926c000a71/70