Square root in just 3 second

Find square root up to '4' digit number.

Find square root of '1296'.

STEP 1 :

First we have to know about these square roots to solve the above value.
Let's say it SQUARELIST -
12 = 1
22 = 4
32 = 9
42 = 16
52 = 25
62 = 36
72 = 49
82 = 64
92 = 81
102 = 100


STEP 2 :

Now Split '1296' from the tens digit like this

VALUE ONE = 12 and VALUE TWO = 96


STEP 3 :

Let's take VALUE ONE and Compare it with the above SQUARELIST and find out in which of the 2 SQUARELIST it lies in between.

Those selected SQUARELIST are :

32 = 9 and 42 = 16
So, the first digit of the cube value will be 3.


STEP 4 :

Now we will find VALUE TWO by compareing it between the SQUARELIST and the selected square roots are.

42 = 16 and 62 = 36
Now we will find the sqare root matching with '1296' between the selected above square roots
So, the selected value is 63