how to square root of 82.6
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This is an approximation method.. It gives the correct answer upto 2 decimals.
Take the next nearest perfect square, here it is 100
1) find its square root -- here it is 10
2) find difference between perfect square and given number -- here it is 17.4
3) Now, find out --- (difference)/ (2 x square root ) = 17.4/ (2 x 10) = 17.4 / 20 = 0.87
4) Subtract step 3 from step 1 to get the answer
here, it is 10 - 0.87 = 9.13
Take the next nearest perfect square, here it is 100
1) find its square root -- here it is 10
2) find difference between perfect square and given number -- here it is 17.4
3) Now, find out --- (difference)/ (2 x square root ) = 17.4/ (2 x 10) = 17.4 / 20 = 0.87
4) Subtract step 3 from step 1 to get the answer
here, it is 10 - 0.87 = 9.13
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