[Lonesome in Massachussets]

Worked for me. Just clicked it.

Try again:

https://xlinux.nist.gov/dads//HTML/squareRoot.html

[Rodamala]

won't work on my phone:

...but I looked online and see a long division type method that groups numbers by 2 places, involves using perfect squares and has an interesting way of multiplying the in-process quotient by 2 before subtracting for a remainder to calculate the next digit. I assume that is the method you may be linking to.