PROGRAM 20

Object

Write a program to calculate the area of triangle, volume of sphere and arrange the resultant values in ascending order.

Algorithm

1. Declare float variables a, b, r, t and s.
2. Read a, b and r.
3. Set Area of Triangle t = (1/2)ab.
   Area of Sphere s = (4/3)πr³.
4. IF t < s, then
   • Write t, s.
   • ELSE
     • Write s, t.
   • [End of IF-ELSE structure.]
5. Exit.

Flowchart

C++ Source Code

// program 20
#include <iostream>
#include <cmath>
#define pi 3.1415927
using namespace std;

int main()
{
  float a, b, r, t, s;

  cout << "Enter the value for Altitude of a Triangle: ";
  cin >> a;

  cout << "Enter the value for Base of a Triangle: ";
  cin >> b;

  cout << "Enter the value for Radius of a Sphere: ";
  cin >> r;

  t = (1.0 / 2.0) * (a * b);
  s = (4.0 / 3.0) * pi * pow(r, 3);

  if (t < s)
  {
    cout << "\n\nArea of Triangle = " << t;
    cout << "\nArea of Sphere = " << s;
  }
  else
  {
    cout << "\n\nArea of Sphere = " << s;
    cout << "\nArea of Triangle = " << t;
  }
  return 0;
}

C Source Code

/*program 20*/
#include<stdio.h>
#include<math.h>
#define pi 3.1415927

int main()
{
  float a, b, r, t, s;
  printf("\nEnter the value for Altitude of a Triangle. ");
  scanf("%f", &a);
  printf("\nEnter the value for Base of a Triangle. ");
  scanf("%f", &b);
  printf("\nEnter the value for Radius of a Sphere. ");
  scanf("%f", &r);

  t=(1.0/2.0)*(a*b);
  s=(4.0/3.0)*pi*pow(r,3);
     if (t<s)
	{
	printf("\n\nArea of Triangle = %.2f",t);
	printf("\nArea of Sphere = %.2f",s);
	}
     else
	{
	printf("\n\nArea of Sphere = %.2f",s);
	printf("\nArea of Triangle = %.2f",t);
	}
  return 0;
} 

Output

Enter the value for Altitude of a Triangle: 3.65
Enter the value for Base of a Triangle: 4.98
Enter the value for Radius of a Sphere: 9.29

Area of Triangle = 9.0885
Area of Sphere = 3358.43