Question

Write a program to calculate the surface area and volume of a cylinder using a macro
surface_area = 2 * Pi * r * (r + h)
Volume = Pi * r * r * h

Answer 1

#include <iostream>
#include <math.h>

using namespace std;

int main()
{
cout << "enter r and h" << endl;
double r;
cin>>r;
cout<<endl;
double h;
cin>>h;
double Pi=3.14;

double surface_area = 2*Pi*r*(r+h);
double Volume = Pi*r*r*h;

cout<<"surface_area= "<<surface_area<<endl;
cout<<"Volume= "<<Volume<<endl;

return 0;
}