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# 28 Squared

28 squared, (28)2, is the number you get when multiplying 28 times 28.

It can also be looked at as exponentiation involving the base 28 and the exponent 2.

The term is usually pronounced twenty-eight times twenty-eight or twenty-eight squared.

The square of 28 is a perfect square because the number is the product of the two equal integers 28.

It can be written as 28 × 28 or in exponential form.

Read on to learn everything about the number twenty-eight squared, including useful identities.

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(28)2 = 784
28 × 28 = 784

The inverse operation of squaring twenty-eight is extracting the square root of 28, explained here.

In the next section we elaborate on what is 28 squared and there you can also find our calculator.

## What is 28 Squared?

A square is a flat shape with four equal sides; every angle is 90°.

Hence, a square with side length 28 has an area of 784.

28 squared equals the sum of the first 28 odd numbers:

In addition, the number can be calculated from 27 squared using the following identity:

n2 = (n − 1)2 + (n − 1) + n = (n − 1)2 + (2n − 1)
(28)2 = 272 + 27 + 28 = 272 + 55 = 784

It can be also be computed from 27 squared with this identity:

n2 = 2 x (n − 1)2 − (n − 2)2 + 2
(28)2 = 2 x 272 – 262 + 2 = 2 x 729 – 676 + 2 = 784

The difference between the perfect square of 28 and its predecessor, 27, can be calculated with the identity n2 − (n − 1)2 = 2n − 1:

2 x 28 – 1 = 55 = (28)2 – 272 = 784 – 729 = 55

28 is even, and the square numbers of even numbers are also even: (2n)2 = 4n2.

Squares of even numbers like 28 are divisible by 4 for

= n2.

If you want to calculate the square of any number, not only integers like 28, you can use our calculator above.

Enter your number; nothing else to be done.

A square similar to 28 is, for example: square of 30.

Ahead, we discuss the frequently asked questions.

## FAQs About 28 Squared

Click on the question which is of interest to you to see the collapsible content answer.

### What is the Square of 28?

The square of 28 is 784.

### How do you Write 28 Squared?

28 squared can be written as (28)2 (a small 2 is placed to the top right of 28) or 28^2.

### Is There a Square Root of 28?

Yes, the square roots of 28 are ±5.2915026221.

### What is the Perfect Square of 28?

The perfect square of 28 is 28 × 28 = 784.

### How Do You Square 28?

You square 28 by multiplying 28 by itself.

### Is 28 a Square Number?

No, 28 is the square of the irrational number 5.2915026221.

### What is the Square of Negative 28?

The square of negative 28 is 784.

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The following table contains the squares of numbers close to 28.

NumberSquare
23529
24576
25625
26676
27729
28784
29841
30900
31961
321,024
331,089

## Twenty-Eight Squared

By reading so far you know all about squaring the number 28 and calculating it using recursive methods, or as sum, product or by exponentiation.

28 squared is equivalent to 784.

If you were searching for what is 28 squared in math or if you typed whats 28 squared in the search engine you now have all the answers, too.

The same goes for searches like square28, and 28 to the 2nd power, just to name a few more examples people are often looking for.

Note that you can also find many perfect squares including 28 squared using the search form in the sidebar of this page.

Ahead is the summary of our information.

## Conclusion

To sum up,

28 squared = 28 × 28 = (28)2 = 784.

The exponentiation form is mostly used to denote twenty-eight squared.

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