首师大附中科创教育平台我的刷题记录(给大家刷16--20题吧)
仅供同学们参考,禁止抄袭!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
#include<iostream> #include<math.h> using namespace std; int main() { double a,b,c; cin>>a; b=2*a*3.14159; c=a*a*3.14159; cout<<b<<" "<<c<<endl; return 0; }
#include<iostream> #include<math.h> using namespace std; int main() { double n,a,b; cin>>n; a=n*n*6; b=n*n*n; cout<<a<<" "<<b<<endl; return 0; }
#include<iostream> #include<math.h> using namespace std; int main() { double r,a,b; cin>>r; a=4*3.14*r*r; b=(4.0/3)*3.14*r*r*r; cout<<a<<" "<<b<<endl; return 0; }
#include<iostream> #include<cmath> using namespace std; int main() { float s1,s2,h,v; cin>>s1>>s2>>h; v=(s1+sqrt(s1*s2)+s2)*h/3; cout<<v<<endl; return 0; }
#include<iostream> #include<math.h> using namespace std; int main() { double r,h,v; cin>>r>>h; v=(1.0/3)*r*r*3.14*h; cout<<v<<endl; return 0; }