Find the number of digits in the square root of each of the following

1.	Find the number of digits in the square root of each of the following numbers (without any calculation).(i) 27225 (ii) 390625
Answer» (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.

Find the number of digits in the square root of each of the following numbers (without any calculation).(i) 27225 (ii) 390625

Answer»

(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.