Question

Can someone help me with this coding question. I cannot get this to run properly. Write a program that defines the named constant PI, const double PI = 3.14159;, which stores the value of π. The program should use PI and the functions listed in Table 6-1 to accomplish the following: Output the value of √π . Prompt the user to input the value of a double variable r, which stores the radius of a sphere. The program then outputs the following: The value of 4.0πr², which is the surface area of the sphere. The value of (4.0/3.0)πr³, which is the volume of the sphere. This is in C++ code

Answer 1

Program Screenshot:

// Include the necessary header files. #include <iostream> #include <cmath> using namespace std; // start the main function. int main() // declare the constant variable PI const double PI = 3.14159; // Display the square root on console. cout<<"Square root of PI is: "<<sqrt(PI)<<endl; // Prompt the user to enter the radius.. cout<<"Enter the radius of a sphere: "; double r; cin>>r; // display the result on console. cout<<"The surface area of a sphere with radius "<<r<<" is: "<<4*PI*p*r<<endl; cout<<"The volume of a sphere with radius "<<r<<" is: "<<(4.0/3.0)*PI*r*p*r<<endl;

Sample output:

Square root of PI is: 1.77245 Enter the radius of a sphere: 4 The surface area of a sphere with radius 4 is: 201.062 The volume of a sphere with radius 4 is: 268.082

Code to Copy:

// Include the necessary header files.

#include <iostream>

#include <cmath>

using namespace std;

// start the main function.

int main()

{

// declare the constant variable PI

const double PI = 3.14159;

// Display the square root on console.

cout<<"Square root of PI is: "<<sqrt(PI)<<endl;

// Prompt the user to enter the radius..

cout<<"Enter the radius of a sphere: ";

double r;

cin>>r;

// display the result on console.

cout<<"The surface area of a sphere with radius "<<r<<" is: "<<4*PI*r*r<<endl;

cout<<"The volume of a sphere with radius "<<r<<" is: "<<(4.0/3.0)*PI*r*r*r<<endl;

}