Square root of 0.042
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Square root result: 

Sqrt(0.042). Find the square root of 0.042 or any other real number, positive or negative. Here are the answers to questions like: Square root of 0.042 or what is the square root of 0.042?
What is square root? Definition of square root
A square root of a number 'x' is a number y such that y^{2} = x, in other words, a number y whose square is y. For example, 5 is the square root of 25 because 5^{2} = 5•5 = 25, 5 is square root of 25 because (5)^{2} = (5)•(5) = 25. When writing math, people often use sqrt(x) to mean the square root of x. Read more about square root here: Square Root  Wikipedia and here: Square Root  Wolfram
Square Symbol?
Here is the square root symbol. It is is denoted by √, known as the radical sign or radix.
Square root of values around 0.042
Number  Sqrt 

The square root of 0.142 is  0.377 
The square root of 0.242 is  0.492 
The square root of 0.342 is  0.585 
The square root of 0.442 is  0.665 
The square root of 0.542 is  0.736 
The square root of 0.642 is  0.801 
The square root of 0.742 is  0.861 
The square root of 0.842 is  0.918 
The square root of 0.942 is  0.971 
The square root of 1.042 is  1.021 