What is the square root of 64?

The square root of a number is the value that, when multiplied by itself, gives the original number. In this case, the square root of 64 is 8 because 8 multiplied by 8 equals 64 (8 x 8 = 64). This concept is fundamental in mathematics, particularly in algebra, where understanding square roots helps in simplifying expressions and solving equations. In this question, the other numbers listed do not produce 64 when squared, which confirms that 8 is indeed the correct square root of 64.