How To Find The Square Root Of 12? - Cuemath

Square Root of 12

The square root of 12 is expressed as √12 in the radical form and as (12)½ or (12)0.5 in the exponent form. The square root of 12 rounded up to 5 decimal places is 3.46410. It is the positive solution of the equation x2 = 12. We can express the square root of 12 in its lowest radical form as 2 √3.

• Square Root of 12: 3.4641016151377544
• Square Root of 12 in exponential form: (12)½ or (12)0.5
• Square Root of 12 in radical form: √12 or 2 √3

1.	What Is the Square Root of 12?
2.	Is Square Root of 12 Rational or Irrational?
3.	How to Find the Square Root of 12?
4.	Important Notes
5.	FAQs on Square Root of 12
6.	Challenging Questions

What Is the Square Root of 12?

Square root of 12 in the radical form is expressed as √12 and in the exponent form, it is expressed as 121/2. Square root of 12 rounded to 5 decimal places is 3.46410. We can also express the square root of 12 in its lowest radical form as 2√3. Numbers which have a radical symbol in their lowest form are called surds.

Is Square Root of 12 Rational or Irrational?

A number which cannot be expressed as a ratio of two integers is an irrational number. The decimal form of the irrational number will be non-terminating (i.e. it never ends) and non-recurring (i.e. the decimal part of the number never repeats a pattern).

Now let us look at the square root of 12. 

√12  = 3.4641016151

Do you think the decimal part stops after 3.4641016151? No, it is never-ending and you cannot see a pattern in the decimal part. Thus, √12 is an irrational number.

How to Find the Square Root of 12?

Let us follow the steps to find the square root of 12 by long division.

Step 1: Make a pair of digits (by placing a bar over it) from the unit's place since our number is 12.

Let us represent it inside the division symbol.

Step 2: Find a number such that when you multiply it with itself, the product is less than or equal to 12

We know that 3 × 3 = 9 and 9 is less than 12. Now let us divide 12 by 3.

Step 3: Let us place a decimal point and a pair of zeros next to it and continue our division.

Now, multiply the quotient by 2 and the product becomes the starting digit of our next divisor.

Step 4: Choose a number in the unit's place for the new divisor such that its product with a number is less than or equal to 300.

We know that 6 is in the ten's place and our product has to be 300 and the closest multiplication is 64 × 4 = 256

Step 5:  Bring down the next pair of zeros and multiply the quotient 34 (ignore the decimal) by 2, which is 68, and the starting digit of the new divisor.

Step 6: Choose a number in the unit's place for the new divisor such that its product with a number is less than or equal to 4400.

Step 7: Add more pairs of zeros and repeat the process of finding the new divisor and product as in step 2.

Note that the square root of 12 is an irrational number, i.e., it is never-ending. Hence, we can stop the process after 4 or 5 iterations, and you will get the square root of 12 by the long division method.

Explore square roots using illustrations and interactive examples

• Square Root of 11
• Square Root of 13
• Square Root of 120
• Square Root of 125
• Square Root of 14

Important Notes:

• Square root of 12 in the radical form is expressed as √12 
• In exponent form, square root of 12 is expressed as √12 = 121/2.
• The real roots of √12 are 3.464...

Challenging Questions:

• What is the value of √√√√12
• Simplify( (√12)1/2)1/2)