What is the square root of 81 in its simplest radical form? To be more specific, we have created an illustration below showing what we want to calculate. Our goal is to make "A" outside the radical (√) as large as possible, and "B" inside the radical (√) as small as possible.

√81 = A√B

It is very easy to simplify the square root of 81 because 81 is a perfect square. The square root of 81 equals a whole number and you can get rid of the radical all together. Thus, here is the answer to the square root of 81 in its simplest form:

**√ 81 = 9**

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Simplify Square Root of 82

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