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# Calculating Areas Of Different Shapes Using Python

• Last Updated : 07 Jul, 2021

We are going to make a Python program for Calculating Areas Of some mathematical Shapes.

Example:

```Input: shape name = "Rectangle"
length = 10
Output: Area: 150

Input: shape name = "Square"
side = 10
Output: Area: 100```

Approach:

In this program, We will ask the user to input the shape’s name. If it exists in our program then we will proceed to find the entered shape’s area according to their respective formulas. If that shape doesn’t exist then we will print “Sorry! We cannot find this shape.” message on the screen.

Below is the implementation:

## Python3

 `# define a function for calculating``# the area of a shapes``def` `calculate_area(name):\``  ` `  ``# converting all characters``  ``# into lower cases``  ``name ``=` `name.lower()``  ` `  ``# check for the conditions``  ``if` `name ``=``=` `"rectangle"``:``    ``l ``=` `int``(``input``(``"Enter rectangle's length: "``))``    ``b ``=` `int``(``input``(``"Enter rectangle's breadth: "``))``    ` `    ``# calculate area of rectangle``    ``rect_area ``=` `l ``*` `b``    ``print``(f"The area of rectangle ``is``          ``{rect_area}.")``  ` `  ``elif` `name ``=``=` `"square"``:``    ``s ``=` `int``(``input``(``"Enter square's side length: "``))``      ` `    ``# calculate area of square``    ``sqt_area ``=` `s ``*` `s``    ``print``(f"The area of square ``is``          ``{sqt_area}.")` `  ``elif` `name ``=``=` `"triangle"``:``    ``h ``=` `int``(``input``(``"Enter triangle's height length: "``))``    ``b ``=` `int``(``input``(``"Enter triangle's breadth length: "``))``      ` `    ``# calculate area of triangle``    ``tri_area ``=` `0.5` `*` `b ``*` `h``    ``print``(f"The area of triangle ``is``          ``{tri_area}.")` `  ``elif` `name ``=``=` `"circle"``:``    ``r ``=` `int``(``input``(``"Enter circle's radius length: "``))``    ``pi ``=` `3.14``        ` `    ``# calculate area of circle``    ``circ_area ``=` `pi ``*` `r ``*` `r``    ``print``(f"The area of triangle ``is``          ``{circ_area}.")``        ` `  ``elif` `name ``=``=` `'parallelogram'``:``    ``b ``=` `int``(``input``(``"Enter parallelogram's base length: "``))``    ``h ``=` `int``(``input``(``"Enter parallelogram's height length: "``))``    ` `    ``# calculate area of parallelogram``    ``para_area ``=` `b ``*` `h``    ``print``(f"The area of parallelogram ``is``          ``{para_area}.")``    ` `  ``else``:``    ``print``(``"Sorry! This shape is not available"``)` `# driver code``if` `__name__ ``=``=` `"__main__"` `:``  ` `  ``print``(``"Calculate Shape Area"``)``  ``shape_name ``=` `input``(``"Enter the name of shape whose area you want to find: "``)``  ` `  ``# function calling``  ``calculate_area(shape_name)`

Output:

```Calculate Shape Area
Enter the name of shape whose area you want to find: rectangle
Enter rectangle's length: 10
The area of rectangle is 150.```

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