look/legacy/cpp/task1.1.cpp

#include <iostream>
#define PI 3.14


int main()
{
	using namespace std;
	float S,R2,R,L;
	cout << "Введите 1: \n";
	cin >> R2;
	cout << "Введите 2: \n";
	cin >> R;
	S=PI*R2;
	L=2*PI*R;

	cout << "Вывод: " << L;



}