Surface Area of Sphere and Circle, Rectangle and Triangleand Floyd’s triangle in c pro

Find Volume and Surface Area of Sphere

#include 

#include 

#include 

int main()

{

    float radius;

    float surface_area, volume;

    clrscr();

    printf("Enter radius of the sphere : \n");

    scanf("%f", &radius);

    surface_area =  4 * (22/7) * radius * radius;

    volume = (4.0/3) * (22/7) * radius * radius * radius;

    printf("Surface area of sphere is: %.3f", surface_area);

    printf("\n Volume of sphere is : %.3f", volume);

    return 0;

    getch();

}

Output

Enter radius of the sphere :

40

Surface area of sphere is: 19200.000

Volume of sphere is : 256000.000

Find the Perimeter of a Circle, Rectangle and Triangle

#include 

#include 

#include 

int main()

{

    float radius, length, width, a, b, c, height;

    int n;

    float perimeter;

    clrscr();

    printf(" \n Perimeter of rectangle \n");

    printf("---------------------------\n");

    printf("\n Enter width and length of the rectangle : ");

    scanf("%f%f", &width,& length);

    perimeter = 2 * (width + length);

    printf("Perimeter of rectangle is: %.3f", perimeter);

                printf("\n Perimeter of triangle n");

    printf("---------------------------n");

    printf("\n Enter the size of all sides of the triangle : ");

    scanf("%f%f%f", &a, &b, &c);

    perimeter = a + b + c;

    printf("Perimeter of triangle is: %.3f", perimeter);

    printf(" \n Perimeter of circle \n");

    printf("---------------------------\n");

    printf("\n Enter the radius of the circle : ");

    scanf("%f", &radius);

    perimeter = 2 * (22 / 7) * radius;

    printf("Perimeter of circle is: %.3f", perimeter);

    printf(" \n Perimeter of equilateral triangle \n");

    printf("---------------------------\n");

    printf("\n Enter any side of the equilateral triangle : ");

    scanf("%f", &a);

    perimeter = 3 * a;

    printf("Perimeter of equilateral triangle is: %.3f", perimeter);

    printf(" \n Perimeter of right angled triangle \n");

    printf("---------------------------\n");

    printf("\n Enter the width and height of the right angled triangle : ");

    scanf("%f%f", &width, &height);

    perimeter = width + height + sqrt(width * width + height * height);

    printf("Perimeter of right angled triangle is: %.3f", perimeter);

    return 0;

    getch();

}

Output

Perimeter of rectangle

---------------------------

Enter width and length of the rectangle : 12 13

Perimeter of rectangle is: 50.000

Perimeter of triangle

---------------------------

Enter the size of all sides of the triangle : 12 16 18

Perimeter of triangle is: 46.000

Perimeter of circle

---------------------------

            Enter the radius of the circle : 10

Perimeter of circle is: 60.000

Perimeter of equilateral triangle

---------------------------

Enter any side of the equilateral triangle : 19 34

Perimeter of equilateral triangle is: 57.000

Perimeter of right angled triangle

---------------------------

Enter the width and height of the right angled triangle : 5 7

Perimeter of right angled triangle is: 73.366

Display Floyd’s triangle

#include 

#include 

main( )

{

    int i, j, k = 1;

    clrscr();

    printf("floyds triangle is\n");

    for( i = 1; k <= 20; ++i )

    {

        for( j = 1; j <= i; ++j )

                printf( "%d ", k++ );

                printf( "\n\n" );

    }

    return 0; 

   getch();

}

Output

Floyds triangle is

1

2 3

4 5 6

7 8 9 10

11 12 13 14 15

16 17 18 19 20 21