Question

square root by estimation method 10​

Answer 1

For finding square root of 10 by estimation :

3^2 = 9

4^2 = 16

so 10 is more closer to 9

square root of 10 is roughly 3

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hope it helps....

if its wrong please forgive me..

if its right so mark as brainlist ..

Answer 2

I can tell You another method of Square root which will give you nearly correct decimal places.

Let A be the number for which you want a square root

then break this number into x+y or x-y

where x should be such a number which has a perfect root.

So the formula is :

$\sqrt{x + y } = \sqrt{x} + \frac{y}{2 \sqrt{x} }$

now for x -y replace the plus sign with minus sign in formula.

Example :

$= \sqrt{20} = \sqrt{25 - 5} = \sqrt{25} - \frac{5}{2 \sqrt{25} } = 5 - \frac{5}{2 \times 5} = 5 - 0.5 = 4.5$