72 is not a perfect square. It is represented as 72. The square source of 72 have the right to only be simplified. In this mini-lesson us will discover to uncover square root of 72 by long division method along with solved examples. Let us see what the square source of 72 is.

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Square source of 7272 = 8.4852Square of 72: 722 = 5184
1.What Is the Square source of 72?
2.Is Square root of 72 reasonable or Irrational?
3.How to discover the Square source of 72?
4.FAQs ~ above Square root of 72

The original number whose square is 72 is the square root of 72. Have the right to you find what is that number? It can be seen that there space no integers who square gives 72.

72 = 8.4852

To check this answer, we can discover (8.4852)2 and we can see that we obtain a number 71.99861904. This number is really close to 72 when that rounded come its nearest value.

Any number i beg your pardon is either terminating or non-terminating and has a repeating pattern in its decimal component is a rational number. We saw that 72 = 8.48528137423857. This decimal number is non-terminating and also the decimal component has no repeating pattern. So it is not a rational number. Hence, 72 is an irrational number.

Important Notes:

72 lies between 64 and 81. Hence, 72 lies between 64 and 81, i.e., 72 lies between 8 and 9.Square root of a non-perfect square number in the most basic radical type can be uncovered using element factorization method. For example: 72 = 2 × 2 × 2 × 3 × 3. So, 72 = (2 × 2 × 2 × 3 × 3) = 62.

How to uncover the Square source of 72?

There space different methods to discover the square root of any number. Us can find the square root of 72 making use of long department method.Click here to know an ext about it.

Simplified Radical type of Square source of 72

72 is a composite number. Hence factors that 72 are 1, 2, 3, 4, 6, 8, 9 12, 18, 24, 36, and also 72. When we discover the square source of any type of number, we take one number from each pair the the exact same numbers native its prime factorization and also we main point them. The factorization of 72 is 2 × 2 × 2 × 3 × 3 which has 1 pair of the same number. Thus, the simplest radical form of √72 is 62.

Square source of 72 by Long division Method

The square source of 72 can be discovered using the long division as follows.

Step 1: In this step, us pair turn off digits that a given number beginning with a digit at one"s place. We placed a horizontal bar come indicate pairing.Step 2: Now we need to uncover a number which on squaring offers value much less than or equal to 72. As we know, 8 × 8 = 64 Step 3: Now, we have actually to carry down 00 and also multiply the quotient by 2 which provides us 16. Step 4: 4 is written at one"s place of brand-new divisor because when 164 is multiply by 4, 656 is acquired which is much less than 800. The acquired answer currently is 144 and we lug down 00.Step 5: The quotient is now 84 and it is multiplied by 2. This gives 168, which climate would become the beginning digit of the brand-new divisor.Step 6: 7 is written at one"s place of new divisor because when 1688 is multiplied by 8, 13504 is obtained which is less than 14400. The derived answer now is 896 and we carry down 00.Step 7: The quotient is now 848 and it is multiplied by 2. This gives 1696, which climate would become the beginning digit the the new divisor.Step 8: 5 is written at one"s place of new divisor since when 16965 is multiply by 8, 84825 is derived which is much less than 89600. The obtained answer currently is 4775 and we lug down 00.


So far we have got 72 = 8.485. ~ above repeating this procedure further, we get, 72 = 8.48528137423857

Explore square roots using illustrations and interactive examples.

Think Tank:

Are -72 and -72 same ?Is -72 a actual number? 

Example 2: Is the radius of a circle having area 72π square inches equal to length of a square having area 72 square inches? 


Radius is found using the formula that area the a one is πr2 square inches. Through the provided information,

πr2 = 72π r2 = 72

By acquisition the square source on both sides, √r2= 72. We know that the square root of r2 is r.The square root of 72 is 8.48 inches.

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The length of square is uncovered using the formula the area of square. Together per the provided information,

Area = length × lengthThus, size = √Area = 72 = 8.48 inches

Hence, radius the a circle having actually area 72π square inches is equal to the length of a square having area 72 square inches.