Square of 2.4
2026-02-28 19:04 Diff
https://brightchamps.com/en-us/math/algebra/square-of-2.4

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Last updated on August 5, 2025

The product of multiplying a number by itself is the square of that number. Squaring is used in programming, calculating areas, and more. In this topic, we will discuss the square of 2.4.

What is the Square of 2.4

The square of a number is the product of the number by itself. The square of 2.4 is 2.4 × 2.4. The square of a number often ends in 0, 1, 4, 5, 6, or 9. We write it in math as 2.4², where 2.4 is the base and 2 is the exponent. The square of a positive and a negative number is always positive. For example, 5² = 25; -5² = 25.

The square of 2.4 is 2.4 × 2.4 = 5.76.

Square of 2.4 in exponential form: 2.4²

Square of 2.4 in arithmetic form: 2.4 × 2.4

How to Calculate the Value of Square of 2.4

The square of a number is found by multiplying the number by itself. Let’s learn how to find the square of a number. These are the common methods used to find the square of a number.

  1. By Multiplication Method
  2. Using a Formula
  3. Using a Calculator

By the Multiplication Method

In this method, we multiply the number by itself to find the square. The product here is the square of the number. Let’s find the square of 2.4.

Step 1: Identify the number. Here, the number is 2.4.

Step 2: Multiplying the number by itself, we get, 2.4 × 2.4 = 5.76.

The square of 2.4 is 5.76.

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Using a Formula (a²)

In this method, the formula a² is used to find the square of the number, where a is the number.

Step 1: Understanding the equation Square of a number = a²

a² = a × a

Step 2: Identifying the number and substituting the value in the equation.

Here, ‘a’ is 2.4. So: 2.4² = 2.4 × 2.4 = 5.76

By Using a Calculator

Using a calculator to find the square of a number is the easiest method. Let’s learn how to use a calculator to find the square of 2.4.

Step 1: Enter the number in the calculator. Enter 2.4 in the calculator.

Step 2: Multiply the number by itself using the multiplication button (×). That is 2.4 × 2.4.

Step 3: Press the equal button to find the answer. Here, the square of 2.4 is 5.76.

Tips and Tricks for the Square of 2.4: Tips and tricks make it easy for students to understand and learn the square of a number. To master the square of a number, these tips and tricks will help students. -

  • The square of an even number is always an even number. For example, 6² = 36. 
  • The square of an odd number is always an odd number. For example, 5² = 25. 
  • The last digit of the square of a number is usually 0, 1, 4, 5, 6, or 9. 
  • If the square root of a number is a fraction or a decimal, then the number is not a perfect square. For example, √1.44 = 1.2. 
  • The square root of a perfect square is always a whole number. For example, √144 = 12.

Common Mistakes to Avoid When Calculating the Square of 2.4

Mistakes are common among students when doing math, especially when it comes to finding the square of a number. Let’s learn some common mistakes to master squaring a number.

Problem 1

Find the length of the square, where the area of the square is 5.76 cm².

Okay, lets begin

The area of a square = a²

So, the area of a square = 5.76 cm²

So, the length = √5.76 = 2.4.

The length of each side = 2.4 cm

Explanation

The length of a square is 2.4 cm. Because the area is 5.76 cm², the length is √5.76 = 2.4.

Well explained 👍

Problem 2

Alice is planning to paint her square table of length 2.4 feet. The cost to paint a foot is 10 dollars. Then how much will it cost to paint the full table?

Okay, lets begin

The length of the table = 2.4 feet

The cost to paint 1 square foot of the table = 10 dollars.

To find the total cost to paint, we find the area of the table,

Area of the table = area of the square = a²

Here a = 2.4

Therefore, the area of the table = 2.4² = 2.4 × 2.4 = 5.76.

The cost to paint the table = 5.76 × 10 = 57.6.

The total cost = 57.6 dollars

Explanation

To find the cost to paint the table, we multiply the area of the table by the cost to paint per foot. So, the total cost is 57.6 dollars.

Well explained 👍

Problem 3

Find the area of a circle whose radius is 2.4 meters.

Okay, lets begin

The area of the circle = 18.10 m²

Explanation

The area of a circle = πr²

Here, r = 2.4

Therefore, the area of the circle = π × 2.4² = 3.14 × 2.4 × 2.4 = 18.10 m².

Well explained 👍

Problem 4

The area of the square is 5.76 cm². Find the perimeter of the square.

Okay, lets begin

The perimeter of the square is

Explanation

The area of the square = a²

Here, the area is 5.76 cm²

The length of the side is √5.76 = 2.4

Perimeter of the square = 4a

Here, a = 2.4

Therefore, the perimeter = 4 × 2.4 = 9.6.

Well explained 👍

Problem 5

Find the square of 3.

Okay, lets begin

The square of 3 is 9

Explanation

The square of 3 is multiplying 3 by 3. So, the square = 3 × 3 = 9

Well explained 👍

FAQs on Square of 2.4

1.What is the square of 2.4?

The square of 2.4 is 5.76, as 2.4 × 2.4 = 5.76.

2.What is the square root of 2.4?

The square root of 2.4 is approximately ±1.549.

3.Is 2.4 a rational number?

Yes, 2.4 is a rational number because it can be expressed as a fraction (12/5).

4.What are the first few multiples of 2.4?

The first few multiples of 2.4 are 2.4, 4.8, 7.2, 9.6, 12, 14.4, 16.8, 19.2, and so on.

5.What is the square of 2?

Important Glossaries for Square 2.4.

  • Rational number: A number that can be expressed as a fraction where both the numerator and the denominator are integers. For example, 2.4 can be expressed as 12/5.
  • Exponential form: Exponential form is the way of writing a number in the form of a power. For example, 9² where 9 is the base and 2 is the power.
  • Square root: The square root is the inverse operation of the square. The square root of a number is a number whose square is the number itself.
  • Perfect square: A number that has an integer as its square root. For example, 144 is a perfect square because its square root is 12.
  • Decimal: A number that has a fractional part separated by a decimal point. For example, 2.4 is a decimal number.

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Jaskaran Singh Saluja

About the Author

Jaskaran Singh Saluja is a math wizard with nearly three years of experience as a math teacher. His expertise is in algebra, so he can make algebra classes interesting by turning tricky equations into simple puzzles.

Fun Fact

: He loves to play the quiz with kids through algebra to make kids love it.