C++ Program to Calculate Perimeter and Area

 C++ Program to Calculate Perimeter and Area

source code : 

//Perimeter and Area of Triangle,Rectangle,Square and Circle

#include<iostream>

#include<math.h>

using namespace std;

int main(){

     cout<<"********Lets code for Triangle ********"<<endl;

    float a,b,c,perimeter,sp,area;

    cout<<"Enter the sides of triangle : ";

    cin>>a>>b>>c;

    perimeter= a+b+c;

    cout<<"Perimeter of triangle is : "<<perimeter<<endl;

    sp=perimeter/2;

    area = sqrt(sp*(sp-a)*(sp-b)*(sp-c));

    cout<<"Area of triangle is : "<<area<<endl;

    cout<<"*************Lets code for Rectangle******"<<endl;

    float length,breadth,p,ar;

    cout<<"Enter the length and breadth of rectangle : ";

    cin>>length>>breadth;

    p= 2*(length+breadth);

    cout<<"Perimeter of rectangle is : "<<p<<endl;

    ar=length*breadth;

    cout<<"Area of rectangle is : "<<ar<<endl;

    cout<<"*********Lets code for square*******"<<endl;

    float d;

    cout<<"Enter the side of square : ";

    cin>>d;

    float e,f;

    e=4*d;

    cout<<"Perimeter of square is : "<<e<<endl;

    f=d*d;

    cout<<"Area of square is : "<<f<<endl;

    cout<<"********Lets code for circle*******"<<endl;

    float r,pi=3.14,C,A;

    cout<<"Enter the radius of circle : ";

    cin>>r;

    C= 2*pi*r;

    cout<<"Circumference of circle is : "<<C<<endl;

    A= pi*r*r;

    cout<<"Area of Circle is : "<<A<<endl;

    return 0;

}

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