C area shapes pro

C Program to find area and circumference of circle

#include

#include

 int main()

{

   int rad;

   float pi = 3.14, area, ci;

   printf("\nenter radius of circle: ");

   scanf("%d", &rad);

   area = pi * rad * rad;

   printf("\narea of circle : %f ", area);

   ci = 2 * pi * rad;

   printf("\ncircumference : %f ", ci);

   return (0);

}

Output

Enter radius of a circle : 1

Area of circle : 3.14

Circumference  : 6.28

C Program to Calculate Area of Scalene Triangle

#include

#include

 int main()

 {

   int s1, s2, angle;

   float area;

   printf("\nenter side1 : ");

   scanf("%d", &s1);

   printf("\nenter side2 : ");

   scanf("%d", &s2);

   printf("\nenter included angle : ");

   scanf("%d", &angle);

   area = (s1 * s2 * sin((m_pi / 180) * angle)) / 2;

   printf("\narea of scalene triangle : %f", area);

   return (0);

}

Output

Enter Side1 : 3

Enter Side2 : 4

Enter included angle : 30

Area of Scalene Triangle : 3.000000

C Program for Beginners area of Square

#include

#include

#include

int main()

{

   int side;

   float area, r_4;

    r_4 = sqrt(3) / 4;

    printf("\nenter the length of side : ");

   scanf("%d", &side);

   area = r_4 * side * side;

   printf("\narea of equilateral triangle : %f", area);

   return (0);

}

Output

Enter the Length of Side : 5

Area of Equilateral Triangle : 10.82

C Program to Calculate Area of Right angle Triangle

#include

#include

 int main()

 {

   int base, height;

   float area;

   printf("\nenter the base of right angle triangle : ");

   scanf("%d", &base);

   printf("\nenter the height of right angle triangle : ");

   scanf("%d", &height);

   area = 0.5 * base * height;

   printf("\narea of right angle triangle : %f", area);

    return (0);

}

Output

Enter the base of Right Angle Triangle   : 4

Enter the height of Right Angle Triangle : 8

Area of Right Angle Triangle : 16.0