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