Tag: Cylinder

C Program To Calculate Surface Area of Cylinder

Given the values for radius and height of a Cylinder, write a C program to calculate Surface Area of the Cylinder.

Formula To Calculate Surface Area of Cylinder

Surface_Area = (2 * PI * radius * height) + (2 * PI * radius * radius);
where PI is approximately equal to 3.14

surface area of Cylinder

Related Read:
Basic Arithmetic Operations In C
Area of Rectangle: C Program
Calculate Area of a Circle without using math.h library: C
C Program To Calculate Circumference of Circle

Logic of Surface Area of Cylinder Formula


A solid Cylinder has 2 circles. One at the top and one at the bottom. Area of a Circle is PI * radius2. Since there are 2 Circles in the Cylinder, we multiply it by 2.

i.e., 2 (PI * radius2)

Next lets cut the cylinder at one end and open it. It forms a rectangle. Now height of the rectangle and height of the Cylinder are same. Width of the rectangle is equal to circumference of the circle, since top and bottom of the Cylinder are circles.

So, area of rectangle = (2 * PI * radius) * height

Therefore, Surface Area of Cylinder is:

SA = ( (2 * PI * radius) * height ) + ( 2 (PI * radius2) );

Expected Output for the Input

User Input:
Enter Radius and Height of the Cylinder
2
5

Output:
Surface Area of Cylinder is 87.920006

Video Tutorial: C Program To Calculate Surface Area of Cylinder


[youtube https://www.youtube.com/watch?v=9GGagAMiMSc]

YouTube Link: https://www.youtube.com/watch?v=9GGagAMiMSc [Watch the Video In Full Screen.]

Source Code: C Program To Calculate Surface Area of Cylinder

#include<stdio.h>

int main()
{
    const float PI = 3.14;
          float r, h, Area;

    printf("Enter Radius and Height of the Cylinder\n");
    scanf("%f%f", &r, &h);

    Area = (2 * PI * r * h) + (2 * PI * r * r);

    printf("Surface Area of Cylinder is %f\n", Area);

    return 0;
}

Output 1:
Enter Radius and Height of the Cylinder
5
10
Surface Area of Cylinder is 471.000031

Output 2:
Enter Radius and Height of the Cylinder
2
13
Surface Area of Cylinder is 188.400009

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C Program To Calculate Volume of Cylinder

Given the values for radius and height of a cylinder, write a C program to calculate volume of the Cylinder.

Formula To Calculate Volume of Cylinder

volume = Base_Area x height;

Base of the Cylinder is a Circle. Area of Circle is PI x Radius2

So lets replace Base_Area with Area of Circle: PI x Radius2.

Therefore, volume = (PI x Radius2) x height;

volume of Cylinder

where PI is 3.14159265359;

Related Read:
Basic Arithmetic Operations In C

Expected Output for the Input

User Input:
Enter Radius and Height of the Cylinder
2
5

Output:
Volume of Cylinder is 62.831856

Logic To Calculate Volume of Cylinder

We ask the user to enter values for radius and height of the Cylinder. If user enters 2m and 5m. Then we use the formula to calculate the Volume of Cylinder:

volume = (PI x Radius2) x height;

User input:
radius = 2m;
height = 5m;

PI value is 3.14159265359;

volume = PI x Radius2 x height;
volume = 3.14 x (2m)2 x (5m);
volume = 3.14 x 4(m)2 x 5(m);
volume = 3.14 x 20(m)3;
volume = ‭62.8‬ m3;

So volume of cylinder is 62.8 cubic meter.

Video Tutorial: C Program To Calculate Volume of Cylinder


[youtube https://www.youtube.com/watch?v=WZMPJEGs0cI]

YouTube Link: https://www.youtube.com/watch?v=WZMPJEGs0cI [Watch the Video In Full Screen.]

Source Code: C Program To Calculate Volume of Cylinder

#include<stdio.h>

int main()
{
    const float PI = 3.14159265359;
          float r, h, volume;

    printf("Enter Radius and Height of the Cylinder\n");
    scanf("%f%f", &r, &h);

    volume = PI * r * r * h;

    printf("Volume of Cylinder is %f\n", volume);

    return 0;
}

Output 1:
Enter Radius and Height of the Cylinder
2
5
Volume of Cylinder is 62.831856

Output 2:
Enter Radius and Height of the Cylinder
2
3
Volume of Cylinder is 37.699112

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For full C programming language free video tutorial list visit:C Programming: Beginner To Advance To Expert