#include <iostream>
#include <cmath>

using namespace std;

int main()
{
    setlocale(LC_ALL, "rus_rus.1251");
    double h, apof, a, P, S, mult;
    cout << "Ââåäèòå ñòîðîíó îñíîâàíèÿ è âûñîòó ïðàâèëüíîé òðåóãîëüíîé ïèðàìèäû" << endl;
    cin >> a;
    cin >> h;
    apof = 3/2.0 * a * h;
    P = (apof * 3*a)/2;
    cout << "Ïëîùàäü áîêîâîé ïîâåðõíîñòè = " << P << endl;

    cout << "Âî ñêîëüêî ðàç óâåëè÷åíà áîêîâàÿ ñòîðîíà äðóãîé ïèðàìèäû?" << endl;
    cin >> mult;
    apof = 3/2.0 * a * h;
    P = (apof * 3*a*mult)/2;
    cout << "Ïëîùàäü áîêîâîé ïîâåðõíîñòè óâåëè÷åííîé ïèðàìèäû = " << P << endl;
    return 0;
}