125 LearnersLast updated on May 30th, 2025
Square of 401
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 401.
What is the Square of 401
The square of a number is the product of the number by itself.
The square of 401 is 401 × 401.
The square of a number always ends in 0, 1, 4, 5, 6, or 9.
We write it in math as 401², where 401 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 401 is 401 × 401 = 160,801.
Square of 401 in exponential form: 401²
Square of 401 in arithmetic form: 401 × 401
How to Calculate the Value of Square of 401
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
- 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 401
Step 1: Identify the number. Here, the number is 401
Step 2: Multiplying the number by itself, we get, 401 × 401 = 160,801.
The square of 401 is 160,801.
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 401
So: 401² = 401 × 401 = 160,801
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 401.
Step 1: Enter the number in the calculator Enter 401 in the calculator.
Step 2: Multiply the number by itself using the multiplication button (×) That is 401 × 401
Step 3: Press the equal to button to find the answer
Here, the square of 401 is 160,801.
Tips and Tricks for the Square of 401
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 401
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.
Mistake 2
Errors will be using the formula.
The formula to find the square of the number is a². Instead, students may use 401² with (4 + 0 + 1)² or (400 + 1)². So students should check and use the correct formula and double-check the answers to avoid all the confusion.
Mistake 3
Confusing with square and square root.
Not understanding the concept of square and square root can lead to confusion in students. To avoid it, students should understand the concept that square and square root are inverse operations. The square of 5 is 25 and the square root of 25 is ±5.
Mistake 4
Errors in parentheses.
Ignoring the parentheses when finding the square of a number can lead to errors. So, students should understand parentheses and do the operations in the correct order to avoid errors.
Mistake 5
Not practicing regularly.
Regular practice is required to master the square of a number. So students should do regular practice to avoid errors.
Solved Examples on Square of 401
Problem 1
Find the length of the square, where the area of the square is 160,801 cm².
The area of a square = a² So, the area of a square = 160,801 cm² So, the length = √160,801 = 401. The length of each side = 401 cm
Explanation
The length of a square is 401 cm.
Because the area is 160,801 cm², the length is √160,801 = 401.
Problem 2
Sam is planning to tile his square floor of length 401 feet. The cost to tile a foot is 5 dollars. Then how much will it cost to tile the full floor?
The length of the floor = 401 feet The cost to tile 1 square foot of floor = 5 dollars. To find the total cost to tile, we find the area of the floor, Area of the floor = area of the square = a² Here a = 401 Therefore, the area of the floor = 401² = 401 × 401 = 160,801. The cost to tile the floor = 160,801 × 5 = 804,005. The total cost = 804,005 dollars
Explanation
To find the cost to tile the floor, we multiply the area of the floor by the cost to tile per foot.
So, the total cost is 804,005 dollars.
Problem 3
Find the area of a circle whose radius is 401 meters.
The area of the circle = 505,645.64 m²
Explanation
The area of a circle = πr²
Here, r = 401
Therefore, the area of the circle = π × 401² = 3.14 × 401 × 401 = 505,645.64 m².
Problem 4
The area of a square is 160,801 cm². Find the perimeter of the square.
The perimeter of the square is 1,604 cm
Explanation
The area of the square = a²
Here, the area is 160,801 cm²
The length of the side is √160,801 = 401
Perimeter of the square = 4a
Here, a = 401
Therefore, the perimeter = 4 × 401 = 1,604.
Problem 5
Find the square of 402.
The square of 402 is 161,604
Explanation
The square of 402 is multiplying 402 by 402.
So, the square = 402 × 402 = 161,604
FAQs on Square of 401
1.What is the square of 401?
2.What is the square root of 401?
3.Is 401 a prime number?
4.What are the first few multiples of 401?
5.What is the square of 400?
6.How does learning Algebra help students in Singapore make better decisions in daily life?
7.How can cultural or local activities in Singapore support learning Algebra topics such as Square of 401?
8.How do technology and digital tools in Singapore support learning Algebra and Square of 401?
9.Does learning Algebra support future career opportunities for students in Singapore?
Important Glossaries for Square 401.
- Prime number: A number that is only divisible by 1 and itself is a prime number. For example, 2, 3, 5, 7, 11, …
- Exponential form: A way of writing numbers using a base and an exponent. For example, 9², where 9 is the base and 2 is the power.
- Square root: The square root is the inverse operation of squaring. The square root of a number is a number which, when multiplied by itself, gives the original number.
- Perfect square: A number that is the square of an integer. For example, 1, 4, 9, 16, …
- Multiplication method: A method to find the square of a number by multiplying the number by itself.
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About BrightChamps in Singapore
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.
