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Area of a triangle given as follows: A= square root of s(s-a)(s-b)(s-c) where a,b,c are the sides of a triangle and 2s=a+b+c. Write a C program to calculate the area of a triangle.


Answer:
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
clrscr();



float a,b,c,S,A;
printf("ENTER THE THREE SIDES OF A TRIANGLE:  ");
scanf("%f%f%f",&a,&b,&c);
S=(a+b+c)/2;
A=sqrt(S*(S-a)*(S-b)*(S-c));
printf("\nArea of the triangle: %.2f",A);
getch();
}

Sample output:
ENTER THE THREE SIDES OF A TRIANGLE: 10 12 14

Area of the triangle=58.79
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