Square Root of 484

The square root of 484 is 22. When a number is multiplied by itself, the resultant number is known as the square number and the number that is multiplied by itself is the square root. Read more on Square Root. Assuming 484 to be a perfect square number, we need to determine the square root of 484. We know that 2 × 2 = 4, so 20 × 20 = 400. But we need to find the square root of 484. So considering the square of 21, i.e. 21 × 21 = 441 and 22 × 22 = 484, we get the value of the square root of 484 as 22. This method of finding the square root of a number is called the estimation method. The other methods are detailed below. 

Note the Following:

The Square root of 484 = √484 = 2√484 where √ = radical, 484 is the radicand and 2 is the index.

Exponential Form of Square root of 484 = 4841/2

Solution for √484 = 22

The square root of 484 is Irrational = False.

What is the Square root of 484?

The square root of 484 is 22, as the square root of 484 is a finite integer. 

√484 = 22

How to Find the Square root of 484?

There are three methods to find the Square root of 484 

  • Prime Factorisation method
  • Long Division method
  • Repeated Subtraction method

Square root of 484 by Prime Factorisation Method

The Prime Factorisation method, the number 484 is divided by prime divisors. The two same prime factors are grouped and removed from the root. The product of numbers out of the root forms the square root of 484. Steps mathematically shown below. 

2

484

2

242

11

121

11

11

×

1

484 = 2 × 2 × 11 × 11

√484 = √(2 × 2 × 11 × 11) = √(2 × 2) × √(11 × 11) 

Hence, √484 = 2 × 11 = 22.

Square root of 484 by Long Division Method

Let us try to find the square root of 484 using the long division method. The steps are

Step 1:  Grouping the given number into pairs. Say if the number is in the form ‘abc’, a and bc form the pairs.

Step 2: Consider the first number, which is “a”.

Let us find a square number that divides “a”

i.e 

1 × 1 = 1 

2 × 2 = 4

3 × 3 = 9

4 × 4 = 16 and so on.

The division should be such that the multiples should be < or = to “a”

Step 3: Division to continue by including the next pair. ie, “bc”. 

Step 4: The first number to be used as the next divisor is (Divisor of first division + quotient of first division)

Step 5: New divisor would be the number from step 4 along with numbers from 1 to 9.

i.e., if the first divisor is d, then the new divisor would be 

d0 × 0 = 0

d1 × 1 = 

d2 × 2 = 

d3 × 3 = 

And so on.

Step 6: If the remainder is zero, then it is a perfect square and the quotient is the square root. Otherwise, the given number would be an imperfect square.

The detailed steps of 484 for long division is 

 

Square root of 484

The remainder is zero and the division is complete. The quotient, which is 22, is the square root of the given number 484.

Square root of 484 by Repeated Subtraction Method.

In the repeated subtraction method, 484 is subtracted with odd numbers. If the subtraction results in zero, then 484 is a perfect square. Else 484 is not a perfect square.

The table below has the details of repeated subtraction for 484.

Step 1

484

1

=

483

Step 2

483

3

=

480

Step 3

480

5

=

475

Step 4

475

7

=

468

Step 5

468

9

=

459

Step 6

459

11

=

448

Step 7

448

13

=

435

Step 8

435

15

=

420

Step 9

420

17

=

403

Step 10

403

19

=

384

Step 11

384

21

=

363

Step 12

363

23

=

340

Step 13

340

25

=

315

Step 14

315

27

=

288

Step 15

288

29

=

259

Step 16

259

31

=

228

Step 17

228

33

=

195

Step 18

195

35

=

160

Step 19

160

37

=

123

Step 20

123

39

=

84

Step 21

84

41

=

43

Step 22

43

43

=

0

For the number 484 to be a perfect square with a rational root, the repeated subtraction should result in zero, which happens to be in step 22. Hence 22 is the square root of 484.

Video Lessons

Visualising square roots

Finding Square roots

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Solved Examples

1. Which number that is smaller than 484 has a perfect square root?

441, which is less than 484, is a perfect square number. 21 is its perfect square root.

2. What is the square of 484?

234256 is the square of 484.

Frequently Asked Questions on Square root of 484

Q1

What is the Square root of 484?

The Square root of 484 is 22
Q2

Does 484 have a perfect square root?

Yes. 484 does have a perfect square root which is 22.
Q3

What are the prime factors of 484?

2 and 11 are the prime factors of 484.
Q4

Is 484 a perfect square number?

Yes. 484 is a perfect square number.
Q5

The square root of 484 is a rational number. True or False?

True. The square root of 484 is a rational number.

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