113 LearnersLast updated on May 26th, 2025
Square of 87
The product of multiplying an integer by itself is the square of a number. Squares are used in programming, calculating areas, and so on. In this topic, we will discuss the square of 87.
What is the Square of 87
The square of a number is the product of the number by itself. The square of 87 is 87 × 87. The square of a number always ends in 0, 1, 4, 5, 6, or 9. We write it in math as 87², where 87 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 87 is 87 × 87 = 7569. Square of 87 in exponential form: 87² Square of 87 in arithmetic form: 87 × 87
How to Calculate the Value of Square of 87
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. 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 87 Step 1: Identify the number. Here, the number is 87 Step 2: Multiply the number by itself, we get, 87 × 87 = 7569. The square of 87 is 7569.
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 87 So: 87² = 87 × 87 = 7569
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 87. Step 1: Enter the number in the calculator Enter 87 in the calculator. Step 2: Multiply the number by itself using the multiplication button (×) That is 87 × 87 Step 3: Press the equal to button to find the answer Here, the square of 87 is 7569. Tips and Tricks for the Square of 87 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 87
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 swap 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 87² with (8 + 7)² or (80 + 7)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 87
Problem 1
Find the length of the square, where the area of the square is 7569 cm².
The area of a square = a² So, the area of a square = 7569 cm² So, the length = √7569 = 87. The length of each side = 87 cm
Explanation
The length of a square is 87 cm. Because the area is 7569 cm², the length is √7569 = 87.
Problem 2
Sarah wants to tile a square patio with a length of 87 feet. The cost to tile a foot is 5 dollars. How much will it cost to tile the entire patio?
The length of the patio = 87 feet The cost to tile 1 square foot of patio = 5 dollars. To find the total cost to tile, we find the area of the patio, Area of the patio = area of the square = a² Here a = 87 Therefore, the area of the patio = 87² = 87 × 87 = 7569. The cost to tile the patio = 7569 × 5 = 37845. The total cost = 37845 dollars
Explanation
To find the cost to tile the patio, we multiply the area of the patio by the cost to tile per foot. So, the total cost is 37845 dollars.
Problem 3
Find the area of a circle whose radius is 87 meters.
The area of the circle = 23,789.97 m²
Explanation
The area of a circle = πr² Here, r = 87 Therefore, the area of the circle = π × 87² = 3.14 × 87 × 87 = 23,789.97 m².
Problem 4
The area of the square is 7569 cm². Find the perimeter of the square.
The perimeter of the square is 348 cm.
Explanation
The area of the square = a² Here, the area is 7569 cm² The length of the side is √7569 = 87 Perimeter of the square = 4a Here, a = 87 Therefore, the perimeter = 4 × 87 = 348.
Problem 5
Find the square of 88.
The square of 88 is 7744
Explanation
The square of 88 is multiplying 88 by 88. So, the square = 88 × 88 = 7744
FAQs on Square of 87
1.What is the square of 87?
2.What is the square root of 87?
3.Is 87 a prime number?
4.What are the first few multiples of 87?
5.What is the square of 86?
6.How does learning Algebra help students in India make better decisions in daily life?
7.How can cultural or local activities in India support learning Algebra topics such as Square of 87?
8.How do technology and digital tools in India support learning Algebra and Square of 87?
9.Does learning Algebra support future career opportunities for students in India?
Important Glossaries for Square of 87.
Square: The product of a number multiplied by itself. For example, 87² = 7569. Perfect square: A number that is the square of an integer. For example, 9 is a perfect square because 3² = 9. Prime number: A number that is only divisible by 1 and itself. For example, 37 is a prime number. Exponential form: A way of writing numbers using bases and exponents, like 87². Multiples: Numbers that result from multiplying a number by an integer. For example, the multiples of 87 are 87, 174, 261, etc.
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Jaskaran Singh Saluja
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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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