What number multiplied by itself equals 138?

Here we will answer: What number multiplied by itself gives 138? In other words, what number times itself will equal 138?

We have identified many different ways of getting the answer to this question:

Algebra Method:
Make an algebra equation and solve for x:

x • x = 138
x ≈ 11.747

Square Root Method:
Take the square root of 138 to get the answer:

√138 ≈ 11.747

Exponent Method:
Make the base 138 and the exponent 0.5 to get the answer:

138^0.5 ≈ 11.747

There you go! Now you know how to calculate "What number multiplied by itself equals 138?"

The bottom line is that 11.747 times itself equals approximately 138 as illustrated here:

11.747 x 11.747 ≈ 138

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The answer on this page is rounded to the nearest thousandth, if necessary.