118 LearnersLast updated on May 29th, 2025
Square of 720
The product of multiplying an integer by itself is the square of a number. Square is used in programming, calculating areas, and so on. In the topic, we will discuss the square of 720.
What is the Square of 720
The square of a number is the product of the number itself.
The square of 720 is 720 × 720.
The square of a number always ends in 0, 1, 4, 5, 6, or 9.
We write it in math as 720², where 720 is the base and 2 is the exponent.
The square of a positive and a negative number is always positive. For example, 5² = 25; (-5)² = 25.
The square of 720 is 720 × 720 = 518400.
Square of 720 in exponential form: 720²
Square of 720 in arithmetic form: 720 × 720
How to Calculate the Value of Square of 720
The square of a number is multiplying the number by itself. So let’s learn how to find the square of a number. These are the common methods used to find the square of a number.
- By Multiplication Method
- Using a Formula (a2)
- Using a Calculator
By the Multiplication method
In this method, we will multiply the number by itself to find the square. The product here is the square of the number. Let’s find the square of 720.
Step 1: Identify the number. Here, the number is 720.
Step 2: Multiplying the number by itself, we get, 720 × 720 = 518400.
The square of 720 is 518400.
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 720
So: 720² = 720 × 720 = 518400
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 720.
Step 1: Enter the number in the calculator. Enter 720 in the calculator.
Step 2: Multiply the number by itself using the multiplication button (×). That is 720 × 720.
Step 3: Press the equal to button to find the answer. Here, the square of 720 is 518400.
Tips and Tricks for the Square of 720
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 always 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 720
Mistakes are common among kids when doing math, especially when it is finding the square of a number. Let’s learn some common mistakes to master the squaring of a number.
Mistake 1
Calculation errors:
Calculation errors mostly happen when students skip the steps or else by swapping the digits. To avoid it, students should double-check the answer. They can double-check by finding the square root of the solution they found.
For example, the square of 25 is 625, and the square root of 625 is ±25.
Solved Examples on Square of 720
Problem 1
Find the length of the square, where the area of the square is 518400 cm².
The area of a square = a²
So, the area of a square = 518400 cm²
So, the length = √518400 = 720.
The length of each side = 720 cm
Explanation
The length of a square is 720 cm.
Because the area is 518400 cm², the length is √518400 = 720.
Problem 2
Sarah is planning to tile her square garden of length 720 feet. The cost to tile a foot is 3 dollars. Then how much will it cost to tile the full garden?
The length of the garden = 720 feet
The cost to tile 1 square foot of the garden = 3 dollars.
To find the total cost to tile, we find the area of the garden.
Area of the garden = area of the square = a²
Here a = 720
Therefore, the area of the garden = 720² = 720 × 720 = 518400.
The cost to tile the garden = 518400 × 3 = 1555200.
The total cost = 1555200 dollars
Explanation
To find the cost to tile the garden, we multiply the area of the garden by the cost to tile per foot.
So, the total cost is 1555200 dollars.
Problem 3
Find the area of a circle whose radius is 720 meters.
The area of the circle = 1621632 m²
Explanation
The area of a circle = πr²
Here, r = 720
Therefore, the area of the circle = π × 720² = 3.14 × 720 × 720 = 1621632 m².
Problem 4
The area of the square is 518400 cm². Find the perimeter of the square.
The perimeter of the square is 2880 cm
Explanation
The area of the square = a²
Here, the area is 518400 cm²
The length of the side is √518400 = 720
Perimeter of the square = 4a
Here, a = 720
Therefore, the perimeter = 4 × 720 = 2880.
Problem 5
Find the square of 721.
The square of 721 is 519841
Explanation
The square of 721 is multiplying 721 by 721.
So, the square = 721 × 721 = 519841
FAQs on Square of 720
1.What is the square of 720?
2.What is the square root of 720?
3.Is 720 a perfect square?
4.What are the first few multiples of 720?
5.What is the square of 721?
6.How does learning Algebra help students in United States make better decisions in daily life?
7.How can cultural or local activities in United States support learning Algebra topics such as Square of 720?
8.How do technology and digital tools in United States support learning Algebra and Square of 720?
9.Does learning Algebra support future career opportunities for students in United States?
Important Glossaries for Square of 720.
- Perfect square: A number that is the square of an integer. For example, 1, 4, 9, 16, 25, etc.
- Square root: The square root is the inverse operation of squaring. The square root of a number is a number whose square is the number itself.
- Exponential form: Exponential form is the way of writing a number with a base and an exponent. For example, 9² where 9 is the base and 2 is the exponent.
- Even number: A number that is divisible by 2. For example, 2, 4, 6, 8, etc.
- Multiplication method: A method to find the square of a number by multiplying the number by itself.
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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.
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