What number multiplied by itself equals 810?

Here we will answer: What number multiplied by itself gives 810? In other words, what number times itself will equal 810?

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 = 810
x ≈ 28.46

Square Root Method:
Take the square root of 810 to get the answer:

√810 ≈ 28.46

Exponent Method:
Make the base 810 and the exponent 0.5 to get the answer:

810^0.5 ≈ 28.46

There you go! Now you know how to calculate "What number multiplied by itself equals 810?"

The bottom line is that 28.46 times itself equals approximately 810 as illustrated here:

28.46 x 28.46 ≈ 810

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