When you take the square root of 2 using the math library's sqrt function, you get a floating point approximation because ...

The C language can be used for mathematical operations, ranging from additions and subtractions to square roots and cube roots, along with other polynomial powers that can be created through C ...

Excel provides SQRT function to find the square root of a number. It is easy to use and you just need to pass the number or reference of a cell which has a number to SQRT function.

To find the square root of a number in Excel, you need to use this formula: =SQRT(<cell coordinates of first cell>). If you have a number in the A1 cell, you need to use this formula like this ...