SQUARE – If a number is multiplied by itself , the product is called the Square of the number.
SQUARE ROOT ( Vargmool ) of a number is that number which when multiplied by itself is equal the given number. Thus , 3 is the square root of 9 and 4 is the square root of 16 .
The Square root of a number is indicated by the symbol √ Or √¯ . Thus, √9 = 3 , √16 = 4 , √25 = 5 .
Similarly, √9 = √3×3 = 3 ; √16 = √4×4 = 4 ; √25 = √5×5 = 5 etc .
Note : The square root of 1 is 1.