What number multiplied by itself equals 815?

Here we will answer: What number multiplied by itself gives 815? In other words, what number times itself will equal 815?

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 = 815
x ≈ 28.548

Square Root Method:
Take the square root of 815 to get the answer:

√815 ≈ 28.548

Exponent Method:
Make the base 815 and the exponent 0.5 to get the answer:

815^0.5 ≈ 28.548

There you go! Now you know how to calculate "What number multiplied by itself equals 815?"

The bottom line is that 28.548 times itself equals approximately 815 as illustrated here:

28.548 x 28.548 ≈ 815

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