Question

Write a C++ program to calculate the sphere volume and surface area. Provided
that the sphere volume = and the sphere surface area = , where r is the radius.
1. Read r from the user using cin statement.
2. Calculate the volume (Vol) and the surface area (Area) of a sphere.
3. Print r, Vol, and Area in a suitable messages.

Answer 1

#include<bits/stdc++.h>
using namespace std;
int main()
{
   //declare the variable
   double r,Area,Vol;
   //calculate the pi value
   double pi = 2*acos(0.0);
   //prompt message for the user
   cout<<"Enter the radius : ";
   //take input from the user
   cin>>r;
   //calculate volume of sphere
   Vol = 4*pi*pow(r,3)/3;
   //surface area of sphere
   Area = 4*pi*pow(r,2);
   //print the volume
   cout<<"The sphere volume = "<<Vol;
   //print the surface area
   cout<<" and the sphere surface area = "<<Area;
   //print the radius
   cout<<", where "<<r<<" is the radius.";
}

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