What number multiplied by itself equals 840?

Here we will answer: What number multiplied by itself gives 840? In other words, what number times itself will equal 840?

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 = 840
x ≈ 28.983

Square Root Method:
Take the square root of 840 to get the answer:

√840 ≈ 28.983

Exponent Method:
Make the base 840 and the exponent 0.5 to get the answer:

840^0.5 ≈ 28.983

There you go! Now you know how to calculate "What number multiplied by itself equals 840?"

The bottom line is that 28.983 times itself equals approximately 840 as illustrated here:

28.983 x 28.983 ≈ 840

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