Program to find the surface area of the cylinder

Explanation

In this program, we have a cylinder with the given radius and height. We need to find its Surface area.

A cylinder is a three-dimensional geometrical figure/container with straight parallel sides and two circular cross-sections. So we have three surfaces of the cylinder.

The surface area of two circular cross-sections = 2( Π × r × r )

The surface area of parallel sides = Circumference times the height = 2 Π × r × h

Total Surface Area of Cylinder = 2( Π × r × r ) + 2 Π × r × h = 2 Π (r + h)

Formula

Surface Area of Cylinder = 2 Π  (r + h)
Here, r is the radius and h is the height of the cylinder.
	Π ( pi ) = 22/7 = 3.14

Algorithm

Define the values of radius and height.
Insert into given formula.
Print the Surface Area of Cylinder.

Complexity

O(1)

Solution

Python

r = 2.0  #radius
h = 5.0 #height
surfacearea = (2*22*(r + h))/7 #calculation
print ("Surface Area Of Cylinder : ");
print (surfacearea); #prints surface area

Output:

Surface Area Of Cylinder :   44.0

C

#include<stdio.h>
int main() 
  { 
    float r,  h, surfacearea;
    r=2.0; 
    h = 5.0;
    surfacearea = (2*22*(r + h))/7;
    printf("\n\n Surface Area of Cylinder is : %f", surfacearea);
    return (0);
   }

Output:

Surface Area of Cylinder is: 44.00000

JAVA

            public class test
            {
             public static void main(String args[])
            {
             float r, h, surfacearea;
              r = 2;
              h  = 5;
              surfacearea = (22*r*(r+h))/7;
              System.out.println("Surface Area of Cylinder is: "+surfacearea);
            }
            }

Output:

Surface Area of Cylinder is:  44.000000

C#

using System;
class Program
{
    static void Main() 
    {
        float r, h, surfacearea;
        r  = 2;
        h = 5; 
        surfacearea = (22*r*(r+h))/7;
        Console.WriteLine("Surface Area of Cylinder is:"+surfacearea);
    }
}

Output:

Surface Area of Cylinder is:  44

PHP

<?php
$r = 2.0;
$h =  5.0;
$surfacearea =(22*$r*($r+$h))/7;
echo("Surface Area Of Cylinder is = ");
echo($surfacearea);
?>

Output:

Surface Area Of Cylinder is = 44

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