Question

What number is to be subtracted from 0.006898 to make it a perfect square?

Answer 1

i have used a basic method of taking square root and taken it as a sure that you know the method

Answer 2

Answer:

The number to be subtracted to make the given number a perfect square is 0.000009

Solution:

Given number,  

0.006898

Here, we need to find the perfect square near to 6898

Perfect square near to 6898 is 6889

i.e., square of 83 will leads to 6889

So, to get 6889, we need to subtract some value from 6898

Thus,  

6898 – 6889 = 9

0.006898 – 0.000009 = 0.006889  

Thus, when we subtract the value of 0.000009 from the given value 0.006898, we get the answer as 0.006889 which is the perfect square of 0.083