Posted by Sonny on Tuesday, September 28, 2010 at 11:26pm.
No ones going to answer man, the question is just kind of not worth answering since there is no step-by-step. Just tell your teacher you sat there multiplying pairs of numbers till you figured that 47^2=2209
Before calculators, we used a method similar to long division.
You will find it explained on this page
http://www.homeschoolmath.net/teaching/square-root-algorithm.php
go about 1/4 down on the webpage to
"Finding square roots using an algorithm"
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