Question

Develop a program so that the output will produce the following :

Answer 1

Answer:

 #include <iostream>

using namespace std;

int main()

{

  float radius = 5.4;

  float circumference = 2 * 3.14 * radius;

  float area = 3.14 * radius * radius;

 

  cout<<"the circumference of the circle is "<<circumference<<endl;

  cout<<"the area of the circle is "<<area<<endl;

  return 0;

}

Explanation:

Include the library iostream for using the input/output instructions.

create the main function and define the variable with value. Then,

use the formula to calculate the circumference and are of circle.

$circumference = 2*\pi *radius$

$area = \pi * radius^{2}$

here, choose $\pi = 3.14$

after that, display the result.

Note: All variable define in float type.