(i) By placing bars, we obtain
27225 = bar2 bar(72) bar(25)
Since there are three bars, the square root of 27225 will have three digits in it.
(ii) By placing the bars, we obtain
390625 = bar(39) bar(06) bar(25)
Since there are three bars, the square root of 390625 will have 3 digits in it.