Square & Square Root of 169

Last Updated: April 25, 2024

Square & Square Root of 169

Square of 169

169² (169 × 169) = 28561

The square of 169 (169²) is calculated by multiplying 169 by itself:

169 × 169 = 28561.

So, the square of 169 is 28,561.

Geometrically, if you have a square numbers with each side measuring 169 units, the total area enclosed by the square will be 28,561 square units.

Understanding the square of 169 is essential in various mathematical contexts, including geometry, algebra, and arithmetic. It finds applications in calculating areas, volumes, distances, and solving mathematical problems.

Square Root of 169

√169 = 13

This is because 13 × 13 = 169.

Thus, the square root of 169 is exactly 13. This calculation is important in various mathematical and practical contexts, such as geometry, where it can represent the side length of a square with an area of 169 square units. It’s also significant in algebra and engineering, where understanding square roots helps in solving problems involving areas and other applications that require precise measurements.

Square Root of 169: 13

Exponential Form: 169^½ or 169^0.5

Radical Form: √169

Is the Square Root of 169 Rational or Irrational?

The square root of 169 is rational.

The square root of 169 is rational number because it equals 13, a whole number. Rational numbers include all integers, fractions, and decimals that can end or repeat. Since 13 is a clear, whole number, it’s definitely rational.

Methods to Find Value of Root 169

Prime Factorization

Prime factorization involves breaking down a number into its prime factors. Since 169 is a product of the prime number 13 (169 = 13²), the square root is easily recognized as 13.

Using a Calculator

The simplest and most accurate way to find the square root of any number, including 169, is by using a calculator. Simply entering “√169” will provide the precise answer, which is 13.

Long Division Method

This traditional method involves a step-by-step process similar to long division. It’s particularly useful for finding square roots of larger numbers but can be applied to smaller numbers like 169 as well:

  1. Pair the digits from right to left (in this case, 169 is treated as 1 and 69).
  2. Determine the largest number whose square is less than or equal to the paired number. In the first step, the largest number whose square is less than or equal to 169 is 12 (since 13² = 169 and 12² = 144, which is too low).
  3. Subtract the square of 12 from 169, drop down the next pair (which doesn’t apply here as 169 is a two-digit number), and proceed until the number is solved, yielding 13.

Guess and Check Method

Start by guessing a number that, when squared, comes close to 169. Test different numbers if necessary. Since 12² = 144 and 14² = 196, you can deduce that the square root of 169 is between 12 and 14. Fine-tuning your guess to 13 will show that 13² equals 169.

These methods provide various ways to determine the square root of 169, whether you prefer a mathematical, technological, or visual approach.

Square Root of 169 by Long Division Method

Square Root of 169  by Long Division Method

To find the square root of 169 using the long division method, you can follow these steps:

Step 1: Set Up the Number:
Write 169 and take the digits in pairs from the right. In this case, 69 is taken as one pair and 1 stands alone.
Step 2: Initial Division:
Divide the leftmost number by a digit such that when multiplied by itself gives a product equal to or less than that number. Here, 1 divided by 1 gives a quotient of 1 and a remainder of 0.
Step 3: Bring Down Next Pair:
Bring down the next pair of digits, which is 69, for the next part of the division.
Step 4 : Adjust the Quotient:
Multiply the current quotient (which is 1) by 2, giving 2. Append a digit (let’s call it X) to this number to form a new divisor. This new divisor will be 20X.
Step 5: Find the Correct Digit:
Find a digit X that, when added to 20 and then multiplied by X, gives a product less than or equal to 69. The correct X in this scenario is 3 because when you add 3 to 20, giving 23, and multiply 23 by 3, the product is exactly 69.
Step 6: Update Quotient and Remainder:
The new digit 3 is added to the quotient, making the updated quotient 13. The remainder after subtracting 69 from 69 is 0.
Thus, using the long division method, the square root of 169 is found to be 13, with a remainder of 0, indicating a perfect square.

169 is Perfect Square Root or Not

Yes, 169 is a perfect square.

It has a square root of 13, which is a whole number. This means that when you multiply 13 by itself (13 × 13), you get 169. The property of having a whole number as a square root defines it as a perfect square.


Is the square root of 169 a natural number?

Yes, the square root of 169 is a natural number. It is 13, which is a positive integer and falls within the set of natural numbers.

Which number is closest to the square root of 169?

The number closest to the square root of 169 is 13 itself, as it is the exact square root. The nearest integers are 12 and 14.

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