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 discover square root of 72 by long division method along with solved examples. Let united state see what the square root of 72 is.

You are watching: What is the square of 7

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

The initial number who square is 72 is the square root of 72. Deserve to you discover what is the number? It can be watched that there space no integers whose square provides 72.

72 = 8.4852

To examine this answer, we can find (8.4852)2 and we have the right to see that we gain a number 71.99861904. This number is an extremely close come 72 when that rounded to its nearest value.

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

Important Notes:

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

How to uncover the Square source of 72?

There are different methods to discover the square source of any kind of number. Us can find the square source of 72 utilizing long department method.Click here to know an ext about it.

Simplified Radical kind of Square root 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. Once we uncover the square root of any number, us take one number from every pair that the very same numbers from its prime factorization and also we multiply them. The administrate of 72 is 2 × 2 × 2 × 3 × 3 which has actually 1 pair of the exact same number. Thus, the simplest radical kind of √72 is 62.

Square source of 72 by Long division Method

The square root of 72 can be uncovered using the long division as follows.

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


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

Explore square roots utilizing illustrations and interactive examples.

Think Tank:

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

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


Radius is found using the formula that area that a circle is πr2 square inches. By the given information,

πr2 = 72π r2 = 72

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

See more: How Many Yards Is 50 Ft - Convert 50 Feet To Yards

The size of square is uncovered using the formula that area that square. As per the given information,

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

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