#include <iostream> using namespace std; int main(){ double a,b,c,d,e,; a = 3.1415926*1*1; b = 3.1415926*3*3; c = 3.1415926*5*5; d = 3.1415926*7*7; e = 3.1415926*9*9; cout<<a<<" "<<b<<" "<<c<<" "<<d<<" "<<e; }