What is the square root of 81?

The square root of 81 is a value that, when multiplied by itself, equals 81. To find the square root of 81, we look for a number that satisfies this condition:

81 = x × x

Let’s break it down step by step:

1. We can express 81 as a product of identical factors: 
   81 = 9 × 9
2. Since 9 multiplied by itself equals 81, the square root of 81 is determined to be 9.
3. Mathematically, the square root function can be written as: 
   √81 = 9

To verify, we can multiply the result by itself: 
9 × 9 = 81.

Thus, the square root of 81 is confirmed to be 9.