Python Program to Calculate the Surface Area and Volume of a Hemisphere

In the previous article, we have discussed Python Program to Compute x^n/n!
Math Module :

Python’s math module is a built-in module. By importing this module, we can perform mathematical computations.

Numerous mathematical operations like ceil( ),floor( ),factorial( ),mod( ),value of pi ,…..etc .can be computed with the help of math module.

Hemisphere:

The word hemisphere can be broken down into hemi and sphere, where hemi means half and sphere is a 3D geometric shape used in mathematics.

As a result, a hemisphere is a three-dimensional geometric shape that is half of a sphere, with one side flat and the other as a circular bowl.

Formula to calculate the surface area of a Hemisphere:

surface area = 3????r²

In which, r is the radius of the hemisphere.

Formula to calculate the volume of a Hemisphere:

Volume = (2/3)*????*r3

Given the Hemisphere’s radius and the task is to calculate the surface area and volume of the given Hemisphere.

Examples:

Example1:

Input:

Given Hemisphere's Radius = 9

Output:

The Surface Area of the given Hemisphere with radius { 9  } =  763.02
The Volume of the given Hemisphere with radius { 9 } =  1526.04

Example2:

Input:

Given Hemisphere's Radius = 12.5

Output:

The Surface Area of the given Hemisphere with radius { 12.5 } = 1471.875
The Volume of the given Hemisphere with radius { 12.5 } = 4088.5416666666665

Program to Calculate the Surface Area and Volume of a Hemisphere in Python

Below are the ways to Calculate the surface area and volume of a hemisphere with the given hemisphere’s radius :

Using Mathematical Formula (Static Input)
Using Mathematical Formula (User Input)

Method #1: Using Mathematical Formula (Static Input)

Approach:

Import the math module using the import keyword.
Give the hemisphere’s radius as static input and store it in a variable.
Take a variable and initialize it with the value of pi as 3.14.
Calculate the surface area of the given hemisphere using the above given mathematical formula and math.pow() function.
Store it in another variable.
Calculate the volume of the given hemisphere using the above given mathematical formula and math.pow() function.
Store it in another variable.
Print the hemisphere’s surface area with the given radius of the hemisphere.
Print the hemisphere’s perimeter with the given radius of the hemisphere.
The Exit of the program.

Below is the implementation:

# Import the math module using the import keyword.
import math
# Give the hemisphere's radius as static input and store it in a variable.
gvn_radus = 9
# Take a variable and initialize it with the value of pi as 3.14 .
valof_pi = 3.14
# Calculate the surface area of the given hemisphere using the above given mathematical
# formula and math.pow() function.
# Store it in another variable.
hemi_surfceara = 3*valof_pi*math.pow(gvn_radus, 2)
# Calculate the volume of the given hemisphere using the above given mathematical formula
# and math.pow() function.
# Store it in another variable.
hemi_volum = (2.0/3.0)*valof_pi*math.pow(gvn_radus, 3)
# Print the hemisphere's surface area with the given radius of the hemisphere.
print("The Surface Area of the given Hemisphere with radius {",
      gvn_radus, " } = ", hemi_surfceara)
# Print the hemisphere's perimeter with the given radius of the hemisphere.
print("The Volume of the given Hemisphere with radius {",
      gvn_radus, "} = ", hemi_volum)

Output:

The Surface Area of the given Hemisphere with radius { 9  } =  763.02
The Volume of the given Hemisphere with radius { 9 } =  1526.04

Method #2: Using Mathematical Formula (User Input)

Approach:

Import the math module using the import keyword.
Give the hemisphere’s radius as user input using the float(input()) function and store it in a variable.
Take a variable and initialize it with the value of pi as 3.14.
Calculate the surface area of the given hemisphere using the above given mathematical formula and math.pow() function.
Store it in another variable.
Calculate the volume of the given hemisphere using the above given mathematical formula and math.pow() function.
Store it in another variable.
Print the hemisphere’s surface area with the given radius of the hemisphere.
Print the hemisphere’s perimeter with the given radius of the hemisphere.
The Exit of the program.

Below is the implementation:

# Import the math module using the import keyword.
import math
# Give the hemisphere's radius as user input using the float(input()) function and
# store it in a variable.
gvn_radus = float(input("Enter some random variable = "))
# Take a variable and initialize it with the value of pi as 3.14 .
valof_pi = 3.14
# Calculate the surface area of the given hemisphere using the above given mathematical
# formula and math.pow() function.
# Store it in another variable.
hemi_surfceara = 3*valof_pi*math.pow(gvn_radus, 2)
# Calculate the volume of the given hemisphere using the above given mathematical formula
# and math.pow() function.
# Store it in another variable.
hemi_volum = (2.0/3.0)*valof_pi*math.pow(gvn_radus, 3)
# Print the hemisphere's surface area with the given radius of the hemisphere.
print("The Surface Area of the given Hemisphere with radius {",
      gvn_radus, " } = ", hemi_surfceara)
# Print the hemisphere's perimeter with the given radius of the hemisphere.
print("The Volume of the given Hemisphere with radius {",
      gvn_radus, "} = ", hemi_volum)

Output:

Enter some random variable = 12.5
The Surface Area of the given Hemisphere with radius { 12.5 } = 1471.875
The Volume of the given Hemisphere with radius { 12.5 } = 4088.5416666666665

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