
When a particular number is multiplied by itself then the obtained result is known as the square of the original number.
EXAMPLES: (i) Square of 7 = 7 × 7 = 49
(ii) Square of 8 = 8 × 8 = 64
If a number is having its square root as another natural number, the given number is a perfect square.
√4=2
Hence, 4 is a perfect square.
The square root of a number is the number, the square of which is equal to the given number.
It is denoted by the symbol" √ ".
EXAMPLE: √36=6
The square root of seven is indicated by " √7 ".
√7 = 2.64575131106
There are some methods in finding out a square root. The methods are as follows:
However, methods like repeated subtraction along with prime factorization are not applicable if the given number is not a perfect square.
The most commonly used methods to find the square root of any number are the average method and the long division method.
Since 7 is not a perfect square, we will find out its value of square root by using the above-discussed methods.
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