What is the square root of 81?

The square root of a number is a value that, when multiplied by itself, gives the original number. In this case, you are looking for a number that, when multiplied by itself, equals 81.

Calculating the square root of 81 involves finding what number multiplied by itself yields 81. It can be evaluated by considering the following:

• 1 x 1 = 1

• 2 x 2 = 4

• 3 x 3 = 9

• 4 x 4 = 16

• 5 x 5 = 25

• 6 x 6 = 36

• 7 x 7 = 49

• 8 x 8 = 64

• 9 x 9 = 81

From this evaluation, it is clear that 9 is the correct answer because it satisfies the condition of multiplying by itself to reach 81. Thus, the square root of 81 is indeed 9.

This process reinforces the concept of square roots in mathematics and highlights why the answer is exactly what it is without ambiguity.