# How do you find the square root of 81?

Kalie

The square root of 81 is 9

√81=√9 × 9

√81= √9^2

√81=√9

When a number is multiplied by its own then we are able to take the root of that value.

Example 1

What is the square root of 4?

Solution

4 = 2 . 2

√4 = √2^2

√4 = 2

Example 2

What is the square root of 25?

Solution

25=5.5

√25=√5^2

√25=5

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