Question

the number of digit in the square root of a number having 9 digits is

Answer 1

Answer:

square root will have 5 digits

Step-by-step explanation:

group 2,2,2,2,1 numbers in nine digits

Answer 2

Answer:

5 digits

Step-by-step explanation:

12 = 1.2 x 10

122 = 1.22 x 10^2

similarly

999999999 = 9.99999999 x 10^8

it's square root = 3. some digit x10^4 , i.e. , number having 5 digits before decimal.

The smallest number of 9 digits is 10^8, it's square root is 19^4.

Hence squre root of any 9 digit number will have 5 digits before decimal.