110 LearnersLast updated on May 26th, 2025
Cube Root of 2187
A number we multiply by itself three times to get the original number is its cube root. It has various uses in real life, such as finding the volume of cube-shaped objects and designing structures. We will now find the cube root of 2187 and explain the methods used.
What is the Cube Root of 2187?
We have learned the definition of the cube root. Now, let’s learn how it is represented using a symbol and exponent. The symbol we use to express the cube root is the radical sign (∛), and the exponent we use is ⅓.
In exponential form, ∛2187 is written as 2187(1/3). The cube root is just the opposite operation of finding the cube of a number. For example: Assume ‘y’ as the cube root of 2187, then y3 can be 2187. Since the cube root of 2187 is an exact value, we can write it as exactly 13.
Finding the Cube Root of 2187
Finding the cube root of a number is to identify the number that must be multiplied three times resulting in the target number. Now, we will go through the different ways to find the cube root of 2187. The common methods we follow to find the cube root are given below:
- Prime factorization method
- Approximation method
- Subtraction method
- Halley’s method
To find the cube root of a perfect cube number, we often follow the prime factorization method. Since 2187 is a perfect cube, we can use the prime factorization method.
Cube Root of 2187 by Prime Factorization
Let's find the cube root of 2187 using the prime factorization method.
First, find the prime factors of 2187:
2187 = 3 × 3 × 3 × 3 × 3 × 3 × 3
Group them in sets of three:(3 × 3 × 3) × (3 × 3 × 3) = 33 × 33
The cube root of 2187 is the product of one number from each set:
∛2187 = 3 × 3 = 9
The cube root of 2187 is 13.
Common Mistakes and How to Avoid Them in the Cube Root of 2187
Finding the cube root of a number without any errors can be a challenging task for students. This happens for many reasons. Here are a few mistakes that students commonly make and ways to avoid them:
Mistake 1
Trying to use approximation methods for perfect cube numbers.
Students sometimes try to approximate the cube root of numbers like 2187, which are perfect cubes, instead of using exact methods. To avoid this error, remember that perfect cubes have exact cube roots.
For example, the cube root of 2187 is exactly 13.
Cube Root of 2187 Examples:
Problem 1
Imagine you have a cube-shaped toy that has a total volume of 2187 cubic centimeters. Find the length of one side of the toy equal to its cube root.
Side of the cube = ∛2187 = 13 units
Explanation
To find the side of the cube, we need to find the cube root of the given volume.
Therefore, the side length of the cube is exactly 13 units.
Problem 2
A company manufactures 2187 cubic meters of material. Calculate the amount of material left after using 487 cubic meters.
The amount of material left is 1700 cubic meters.
Explanation
To find the remaining material, subtract the used material from the total amount:
2187 - 487 = 1700 cubic meters.
Problem 3
A bottle holds 2187 cubic meters of volume. Another bottle holds a volume of 100 cubic meters. What would be the total volume if the bottles are combined?
The total volume of the combined bottles is 2287 cubic meters.
Explanation
Let’s add the volume of both bottles:
2187 + 100 = 2287 cubic meters.
Problem 4
When the cube root of 2187 is multiplied by 2, calculate the resultant value. How will this affect the cube of the new value?
2 × 13 = 26 The cube of 26 = 17576
Explanation
When we multiply the cube root of 2187 by 2, it results in a significant increase in the volume because the cube increases exponentially.
Problem 5
Find ∛(1000 + 1187).
∛(1000 + 1187) = ∛2187 = 13
Explanation
As shown in the question ∛(1000 + 1187), we can simplify that by adding them.
So, 1000 + 1187 = 2187.
Then we use this step:
∛2187 = 13 to get the answer.
FAQs on 2187 Cube Root
1.Can we find the Cube Root of 2187?
2.Why is the Cube Root of 2187 a rational number?
3.Is it possible to get the cube root of 2187 as an exact number?
4.Can we find the cube root of any number using prime factorization?
5.Is there any formula to find the cube root of a number?
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 Cube Root of 2187?
8.How do technology and digital tools in United States support learning Algebra and Cube Root of 2187?
9.Does learning Algebra support future career opportunities for students in United States?
Important Glossaries for Cube Root of 2187
- Cube root: The number that is multiplied three times by itself to get the given number is the cube root of that number.
- Perfect cube: A number is a perfect cube when it is the product of multiplying a number three times by itself. A perfect cube always results in a whole number. For example, 3 × 3 × 3 = 27, therefore, 27 is a perfect cube.
- Exponent: The exponent form of the number denotes the number of times a number can be multiplied by itself. In a(1/3), ⅓ is the exponent which denotes the cube root of a.
- Radical sign: The symbol that is used to represent a root which is expressed as (∛).
- Rational number: A number that can be expressed as a fraction of two integers. For example, the cube root of 2187 is rational because it can be expressed as 13/1.
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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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