What is the square root of 121?

The square root of a number is a value that, when multiplied by itself, produces that number. In this case, the square root of 121 is being asked.

When calculating, you can see that 11 multiplied by 11 equals 121. Therefore, 11 is the number that, when squared, results in 121. This understanding is fundamental to recognizing that the square root function essentially reverses the operation of squaring a number.

The other numbers, such as 10, 12, and 13, do not produce 121 when squared. For example, 10 squared is 100, 12 squared is 144, and 13 squared is 169. Thus, they cannot be the square root of 121. The correct answer is precisely 11, as it satisfies the definition of the square root.