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#include <iostream> #include <cmath> #include <iomanip> using namespace std; int main() { double r; cin>>r; double v=3.14*r*r*r*4.0/3; cout<<fexed<<setprecision(2)<<v; return 0; }
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#include <iostream>
#include <cmath>
#include <iomanip> using namespace std; int main() { double r; cin>>r; double v=3.14rrr4.0/3; cout<<fexed<<setprecision(2)<<v;
return 0;
}