bai tap c++ can ban, hinh hop

hinh_hop.cpp

//
//  main.cpp
//  homework
//
//  Created by Toan on 9/16/18.
//  Copyright © 2018 Toan. All rights reserved.
//

#include <iostream>
#include "math.h"

using namespace std;


int main(){

    int s1,s2,s3; // Gia tri dien tich cua cac mat hinh hop chu nhat
    int a,b,c; // Lan luot la 3 canh cua hinh hop chu nhat
    int p1,p2,p3; // Lan luot la chu vi
    int t; // Tong chu vi
    
    cout << "Nhap S1:";
    cin >>s1;
    
    cout << "Nhap S2:";
    cin >> s2;
    
    cout << "Nhap S3:";
    cin >> s3;
    
    
    // tinh canh C
    
    double tmp = (double)((s1*s3)/s2);
    
    c = sqrt(tmp);
    
    /*
     tinh A
     */
    
    a = s1/c;
    // Tinh B
    b = s3/c;
    
    p1 = 2*(a+c);
    p2 = 2*(a+b);
    p3 = 2*(b+c);
    
    t = p1+p2+p3;
    
    cout << "Tong Chu Vi la:" << t;
    
    return 0;
}