What is the shortcut to calculate the square root for a very big no. ? for eg if u consider pi = 22/7?

Answer 1

Write the number out as a decimal, with as many digits as you want to be correct in the square root.

Then go to the web page below, which shows how to work a sum rather like a long division, but with a divisor which starts with only one digit and gets longer by one digit each time. The final answer is the square root.

Answer 2

I'm assuming you either can't use a calculator as dictated by the question, or you don't have a calculator around you at the moment. Well for me, what i'll do is that i will want to make my life easier in a lot of ways. perfect square numbers such as 1x1=1, 2x2=4, 3x3=9... ... will be useful here. For pi will be a little harder to explain, but we can try sth like 36.

36=9x4
thus root of 36= (root of 9) x (root of 4)
=3x2
=6

or if you have a weird number like 22, which u cant divide by a perfect square number and get a whole number, you can try apporoximation method.

22=(5x5) - 3
so root of 22 will be around 5-sth that is less than one. so should b around .4? (you do more u will c e approx)
so is about 5-.4=4.6

yep
hope it helps.

Answer 3

Say you want the square root of 56.

You know that 7² = 49 and 8²=64. So the answer is something in between.

Try a few decimals to get as close as you want... Eventually you'll get 7.5² = (7 + .5)² = 49 + 7 + .25 = 56.25 which is pretty close.

Answer 4

Whatever you say, Dewd. Use your calculator. If you don't have a calculator, there are 'bout a gazillion web sites with Java calculator applets. Or use the calculator that comes with Windoze. Just be sure to set the 'view' on it to 'scientific'.


Doug

Answer 5

use the calculator and pi doesn't equal 22/7 because in my mathmatical opinion the ratio pi cannot be in fraction because of its natural creation