Question

find the square root of 7 by approximately​

Answer 1

Answer:

Before finding the value of root 7, it is important to know what is perfect and non-perfect square. Any perfect square number ends with 1, 4, 5, 6, 9 in the unit place. Any number that ends with 2, 3, 7, 8 at the unit place is called non-perfect square.

Example: Let’s consider number 7.  

• 7 is a prime number.
• It has no square factor.

The square root of the non-perfect square can be found by any of the following methods:

• Using binomial theorem.
• Using calculus.
• Long division method.

To find the square root of 7 we can use the long division method which is simple and easy.

Therefore, the value of the square root of 7 is 2.64.