Write a Program to calculate the surface Area of Cone

Program of calculating the surface area of a cone in different Programming languages

Program 1: Write a Program in C language:

// This C program which uses a function to calculate the surface area of a cone.  
#include <stdio.h>  
#define pi 3.141592653589793   
float find_SurfaceArea_of_cone(float r, float s) // It is a function to find surface area   
{   
float SurfaceArea_of_cone;  
SurfaceArea_of_cone= pi * r * s + pi * r * r ; // It is a formula for calculating a surface area of cone   
return (SurfaceArea_of_cone);   
}   
float main()   
{   
float r,s ;   
printf("Enter the radius of the cone:");   
scanf("%f",&r);  
printf("Enter the slant height of the cone:");   
scanf("%f",&s);  
  
printf("Surface Area of the cone is: %.2f", find_SurfaceArea_of_cone(r,s));     
return 0;   
}  

Output of Above C program:

Enter the radius of the cone: 5
Enter the slant height of the cone: 10
Surface Area of the cone is: 235.62

Program 2: Write a Program in Java language:

// This a  Java program which calculates the surface area of a cone.  
class findsurface_area {   
static float find_SurfaceArea_of_cone(float r, float s)   
{   
 final float pi = (float) 3.141592653589793;   
float SurfaceArea_of_cone;  
SurfaceArea_of_cone= pi * r * s + pi * r * r; // It is a formula for calculating the surface area of cone   
return(SurfaceArea_of_cone);   
}   
// Driver method   
public static void main(String[] args)   
{   
float radius = 2;   
float slant_height=10;  
System.out.println("The Surface Area of a cone in Java:");  
System.out.println(find_SurfaceArea_of_cone(radius,slant_height));   
}   
}  

Output of Above Java program:

The Surface Area of a cone in Java:
75.398224

Program 3: Write a Program in PHP programming language.

<?php   
// This a  PHP program which calculates the surface area of a cone.    
// Function to find surface area   
function find_SurfaceArea_of_cone($r, $l)   
{     
$pi= 3.14;  
$SurfaceArea_of_cone = $pi * $r * $l + $pi * $r * $r; // It is a formula which calculates the surface area  and store the value in the Surface Area_of_cone variable.   
return ($SurfaceArea_of_cone);   
}   
$side = 2;  
$l=10;   
echo find_SurfaceArea_of_cone($side, $l);   
?>  

Output of Above PHP program:

75.36

Program 4: Write a Program in Python programming language.

# This is a python program which calculates the surface area of a cone.   
# It is a function to calculate the surface area of cone  
import math  
pi = math.pi  
def surfacearea_of_cone(r, s):  
    return pi * r * s + pi * r * r # It is a formula which calculates the value of Surface Area.   
# Main Code  
radius = float(2)  
slant_height = float(10)  
print( "Surface Area Of Cone : ", surfacearea_of_cone (radius, slant_height) )  

Output of Above Python program:

Surface Area of Cone:  75.39822368615503