Question

write the number of digits in the given squares without actual calculations. a) 12 2​ pls ans fst

Answer 1

If the total number of digits in the number is even then, the number of digits in square root will be determined by using the formula N=n2 and in the case of odd number of digits square root will be N=n+12 where, n is the number of digits in the number. Hence, the total number of digits in the square root of 64 is 1.

Answer 2

Squares and Square Roots

∴ Number of digit is its square root =

(ii) For 144, n=3 (odd number) ∴ Number of digit is its square root =

(iii) For 4489, n=4 (even number) ∴ Number of digit is its square root =

(iv) For 27225, n=5 (odd number) ∴ Number of digit is its square root = (v) For 390625, n=6 (even number)