Square root of 7.81

Sqrt(7.81). Find the square root of 7.81 or any other real number, positive or negative. Here are the answers to questions like: Square root of 7.81 or what is the square root of 7.81?

What is square root? Definition of square root

A square root of a number 'x' is a number y such that y² = x, in other words, a number y whose square is y. For example, 2 is the square root of 4 because 2² = 2•2 = 4, -2 is square root of 4 because (-2)² = (-2)•(-2) = 4. 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 7.81