for those who know math well.

[Behlol]

how do u find the square root of a number?

[Buddhmaster]

Use your calculator.

[Swervy]

Originally Posted by Buddhmaster

Use your calculator.

thats the best answer you will get

[biased indian]

Originally Posted by Buddhmaster

Use your calculator.

Finding square roots of of numbers that aren't perfect squares without a calculator

1. Estimate - first, get as close as you can by finding two perfect square roots your number is between.

2. Divide - divide your number by one of those square roots.

3. Average - take the average of the result of step 2 and the root.

4. Use the result of step 3 to repeat steps 2 and 3 until you have a number that is accurate enough for you.


Example: Calculate the square root of 10 to 2 decimal places.

1. Find the two perfect square numbers it lies between.


Solution:
(3)2 = 9 and (4)2 = 16, so lies between 3 and 4.

2. Divide 10 by 3. 10/3 = 3.33 (you can round off your answer)

3. Average 3.33 and 3. (3.33 + 3)/2 = 3.1667

Repeat step 2: 10/3.1667 = 3.1579
Repeat step 3: Average 3.1579 and 3.1667. (3.1579 + 3.1667)/2 = 3.1623

Try the answer --> Is 3.1623 squared equal to 10? 3.1623 x 3.1623 = 10.0001

If this is accurate enough for you, you can stop! Otherwise, you can repeat steps 2 and 3.

Note: There are a number of ways to calculate square roots without a calculator. This is only one of them.

[Swervy]

Originally Posted by biased indian

Finding square roots of of numbers that aren't perfect squares without a calculator

1. Estimate - first, get as close as you can by finding two perfect square roots your number is between.

2. Divide - divide your number by one of those square roots.

3. Average - take the average of the result of step 2 and the root.

4. Use the result of step 3 to repeat steps 2 and 3 until you have a number that is accurate enough for you.


Example: Calculate the square root of 10 to 2 decimal places.

1. Find the two perfect square numbers it lies between.


Solution:
(3)2 = 9 and (4)2 = 16, so lies between 3 and 4.

2. Divide 10 by 3. 10/3 = 3.33 (you can round off your answer)

3. Average 3.33 and 3. (3.33 + 3)/2 = 3.1667

Repeat step 2: 10/3.1667 = 3.1579
Repeat step 3: Average 3.1579 and 3.1667. (3.1579 + 3.1667)/2 = 3.1623

Try the answer --> Is 3.1623 squared equal to 10? 3.1623 x 3.1623 = 10.0001

If this is accurate enough for you, you can stop! Otherwise, you can repeat steps 2 and 3.

Note: There are a number of ways to calculate square roots without a calculator. This is only one of them.

I beleive that process is called 'iteration'

[Behlol]

thanks biased indian,u r very helpful.

[Robertinho]

Haha mang, you could have just used the square root button on your calculator

[age_master]

Originally Posted by Buddhmaster

Use your calculator.

unless you do 4 unit (highest school maths) out here thats what we have been taught