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 we can find square of any number by this method ?

yes

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yes ofcourse

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There are two ways to find the square root of a number.
One is by using manual calculation and the other by using the log table.
In the manual method, we start from the end and make pairs of two numbers.

Have a look at the example given below:
 



Here is the second method. You will learn about it in class XI :)


 
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Here is another example where we have to find the square root of 16.120225.
We have made pairs of two numbers denoted by a bar. Starting from the end, these are the pairs:

,

, 

,



Now we starting using the long division method. The first pair is


Here, in this type of division, we use numbers whose square roots are possible.

 

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4 is multiplied by 4 and then 16 is substracted from 16.120225
After doing this, the number 4 (quotient) must be added to the divisor to give 8.

The next pair is then brought down (

)
We have 8 as the divisor and now we must add a digit to the right of 8 and the same digit (0) should be multiplied by 80.
If we have taken the digit to the right to be 1, the number would have been 81 and again we have to multiply 81 by 1. But, 81 is greater than 12 and hence we take 80.

Now once again another pair of numbers is brought down and a digit is added to the right of 80 and this goes on.

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I dont know OK

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