What is the value of the square root of 49?

The value of the square root of 49 is 7 because the square root function is defined as the value that, when multiplied by itself, gives the original number. In this case, 7 multiplied by 7 equals 49 (7 × 7 = 49). Therefore, 7 is the principal (non-negative) square root of 49. Understanding square roots is fundamental in mathematics as it often involves identifying the values that satisfy this multiplication relationship. This knowledge can be applied to various mathematical problems, including solving equations and simplifying expressions.