Ответ:

с++

Объяснение:

#include <iostream>

#include <math.h>

#include <string>

#include<ctime>

using namespace std;

int main()

{

double a, b;

double r1, r2;

cout << "r1 = "; cin >> r1;

cout << "r2 = "; cin >> r2;

a = 3, 14 * r1;

b = 3, 14 * r2;

cout << (a + b) << endl;

return 0;

}