Cube root of 81 Here we will show you the answer to the cube root of 81 in decimal form and in its simplest radical form. But before that, we start by showing you the cube root of 81 written in mathematical terms:

81

The √ is called the radical symbol, the little 3 is the index which means cube, and 81 is the radicand.

The cube root of 81 is a number (n) that when multiplied by itself twice will equal 81. In other words, the cube root of 81 is the number (n) in the following equation:

n × n × n = 81

81 is the same as 81. Therefore, to solve the problem in Excel or Numbers, you can enter 81^(1/3) to get the answer to the cube root of 81. However, we used a scientific calculator and typed in 81 and then pressed the [∛x] button. We got the following answer:

81 ≈ 4.3267

You can simplify the cube root of 81 if you can make the radicand smaller. This is called the cube root of 81 in its simplest radical form. The answer to the cube root 81 in its simplest form is displayed below:

81 = 3∛3

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Cube root of 82
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