C-Programs on Mathematical Problems (Ex 2)

* write a program input, Area of the Circle.

#include<stdio.h> #include<conio.h> void main( )         {         int rds;         float area;         clrscr( );         rds = 6;         area = 3.14 * rds * rds;                  printf("Area of Circle : %f",area);         getch( );         }

Output:-

Area of Circle : 113.040000

* write a program input, Perimeter of the Circle.

#include<stdio.h> #include<conio.h> void main( )           {           int rds;           float prmtr;           clrscr( );           rds = 6;           prmtr = 2 * 3.14 * rds;                printf("Perimeter of Circle : %f",prmtr);           getch( );           }

Output:-

Perimeter of Circle : 37.680000

* write a program input, Area and Perimeter of a Square.

#include<stdio.h> #include<conio.h> void main()        {              int area,side,perimeter;              clrscr();              side=6;              area=side*side;              perimeter=4*side;                     printf("the area of a Square is:%d\n",area);                     printf("the perimeter of a Square is:%d",perimeter);              getch();        }

Output:-

the area of a Square is: 36 the perimeter of a Square is: 24

* write a program input, Area and Perimeter of a Rectangle.

#include<stdio.h> #include<conio.h> void main()       {             int lenth,bredth,area,perimeter;             clrscr();             length=6;             bredth=4;             area=lenth*bredth;             perimeter=2*(lenth+bredth);                   printf("the area of a rectangle is:%d\n",area);                   printf("the perimeter of a rectangle is:%d",perimeter);             getch();       }

Output:-

the area of a rectangle is: 24 the perimeter of a rectangle is:20

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