Python Program to Find Cube of a Number

Last Updated : 05 Sep, 2024

The cube of a number is obtained by multiplying that number by itself twice. If we consider the number as 'n' then the cube of n is n*n*n and is represented as n^3. We are given a number and we have to find its cube value.

Example:

Input: 5
Output: 125
Explanation: 5 * 5 * 5 = 125

In this article, we aim to find the cube of a number in Python.

Python Programs to Find Cube of a Number

Now let us see different approaches to find the cube of a given number in Python.

Arithmetic Multiplication Operator

A simple and easy way is to manually multiply the number by itself twice by using the arithmetic multiplication operator. This method is clear and intuitive.

# function to find cube
def cube(num):
  
    # arithmetic multiplication
    return num * num * num
  
num = 5
print(f"The cube of {num} is {cube(num)}")

Output:

The cube of 5 is 125

Using Exponentiation Operator

The exponentiation operator ** is a straightforward way to raise a number to any power. To find the cube, you simply raise the number to the power of 3.

# function to find cube
def cube(num):
  
    # exponentiation operator
    return num ** 3

num = 125
print(f"The cube of {num} is {cube(num)}")

Output:

The cube of 5 is 125

The pow() Function

The built-in pow() function can also be used to raise a number to a power. It takes two arguments: the base and the exponent.

# function to find cube
def cube(num):
  
    # inbuilt pow() function
    return pow(num, 3)
  
num = 5
print(f"The cube of {num} is {cube(num)}")

Output:

The cube of 5 is 125

Lambda Function

The Lambda functions are small anonymous functions defined with the lambda keyword. They can be useful for simple calculations.

num = 5

# lambda function find cube
cube = lambda x: x * x * x

print(f"The cube of {num} is {cube(num)}")

Output:

The cube of 5 is 125

Using For Loop

To find the cube of a number using a for loop, you need to multiply the number by itself three times. This can be done by initializing a result variable to 1 and then repeatedly multiplying it by the number.

# function to find cube
def cube(num):
  
    # product varib]able
    result = 1
    
    # for loop
    for _ in range(3):
        result *= num
    return result
  
num = 5
print(f"The cube of {num} is {cube(num)}")

Output:

The cube of 5 is 125

The math.pow() Function

Another way is to use pow() function of the math module, which is used to raise a number to a power. It takes two arguments: the base and the exponent.

# import math module
import math

# function to find cube
def cube(num):
  
    # math.pow() function
    return math.pow(num, 3)
  
num = 5
print(f"The cube of {num} is {cube(num)}")