Find the square root 324 by using ‘Viiokanam’ method.

1.	Find the square root 324 by using ‘Viiokanam’ method.
Answer» 324 (i) Unit place of 324 is 4. So it is a perfect square number. (ii) Sum of digits = 3 + 2 + 4 = 9 which is perfect square. (iii) This number will have two digits in square root. (iv) Making pair of 2-2 in 324 from right to left, second pair has only one digit 3. ∴ Tens place in square root of 324 will be 1. (v) ∵ Extreme digit of number 324 is 3. ∴ Extreme digit of square root will be either 1 or 8. Hence, the square root of 324 is 18.

Answer»

324

(i) Unit place of 324 is 4. So it is a perfect square number.

(ii) Sum of digits = 3 + 2 + 4 = 9 which is perfect square.

(iii) This number will have two digits in square root.

(iv) Making pair of 2-2 in 324 from right to left, second pair has only one digit 3.

∴ Tens place in square root of 324 will be 1.

(v) ∵ Extreme digit of number 324 is 3.

∴ Extreme digit of square root will be either 1 or 8.

Hence, the square root of 324 is 18.

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