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Square root Explanation

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Posted by Anynomous(143.192.1.15) on May 12, 2001 at 18:00:42:

In Reply to: HELP !! FIND THE SQUARE ROOT posted by on May 01, 2001 at 23:57:03:

Hi Jerry,

Let's say you want to find what the square root of 16
is.

when multiplied by it self is 16?" the answer is 4.
4 x 4 = 16

The square root of 4 is 2. Because 2 x 2 = 4

The square root of 9 is 3. Because 3 x 3 = 9

The square root of 25 is 5. Because 5 x 5 = 25

How about the square root of 75.21548?

or the square root of 12?

You need to use a calc for certain numbers like
75.21525 and 12.

However, you can estimate the square root of a number
without a calc.

example: the square root of 75.21525 is
approximatelly between 8 and 9 because

8 x 8 = 64

9 x 9 = 81

8.67 x 8.67 = 75.429

So 8.67 is approximatelly the square root of 75.21525,
this is a good approximation without a calc.

I hope I was able to give you an idea of how to find
the square root of a number without using a calculator.

Good Luck Jerry.