Wzh0421 @ 2024-11-19 22:59:12
} else if (T == 8) { double r=5; cout<<pir2<<endl<<pirr<<endl<<4.0/3pirrr<<endl;
by PION_ @ 2024-11-21 22:12:58
else if(T==8)
{
double pi=3.141593;
int r=5;
cout<<1.0*pi*r*2<<endl<<1.0*pi*r*r<<endl<<4.0/3*pi*r*r*r<<endl;
}