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Square Root = Sq. Root of Nearest Perfect Square + {difference of the given number from the nearest perfect square / 2 x (Sq. Root of Nearest Perfect Square)}
Example 1 : Square Root of 57.= 8 + (57-64) / 2 x 8 (since the perfect square closest to 57 is 64; we will take square root of 64 i.e. 8 for calculations)= 8 – 7/2×8=8 – 7/16= 7.56 (approx).
The...