what is the square root of 4761?
sqrt(4761) = 69.
recheck: 69*69=sqrt(4761)
it is 69, to find it
\(\sqrt{4761}= \sqrt{9*529}=3\sqrt{529}\)
now, we know that 20 is close to 529 and only a units digit of 3 can result in a units digit of 9, so
\(3\sqrt{529}=3\sqrt{23^2}=3*23=69\)
+363 
