What number multiplied by itself equals 821?




Here we will answer: What number multiplied by itself gives 821? In other words, what number times itself will equal 821?

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 = 821
x ≈ 28.653


Square Root Method:
Take the square root of 821 to get the answer:

√821 ≈ 28.653

Exponent Method:
Make the base 821 and the exponent 0.5 to get the answer:

8210.528.653

There you go! Now you know how to calculate "What number multiplied by itself equals 821?"

The bottom line is that 28.653 times itself equals approximately 821 as illustrated here:

28.653 x 28.653 ≈ 821


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