The Program in C++ to Find the Area and Circumference of a circle is given below:
#include <iostream>
#include <cmath>
using namespace std;
int main() {
double radius, area, circumference;
cout << "Enter the radius of the circle: ";
cin >> radius;
area = M_PI * pow(radius, 2);
circumference = 2 * M_PI * radius;
cout << "Area of the circle: " << area << endl;
cout << "Circumference of the circle: " << circumference << endl;
return 0;
}
Output:
Enter the radius of the circle: 56
Area of the circle: 9852.03
Circumference of the circle: 351.858
Pro-Tips💡
In this program, the user is prompted to enter the radius of the circle.
This value is then stored in the variable ‘radius'.
The area of the circle is calculated using the formula ‘area = M_PI * pow(radius, 2)‘, and the circumference is calculated using the formula ‘circumference = 2 * M_PI * radius‘.
The resulting area and circumference are then displayed on the screen.
Note: M_PI is a predefined constant in C++ for pi (3.14159265358979323846)
Also, ‘pow(x, y)‘ is a library function in C++ that returns the value of x raised to the power of y.
Learn C-Sharp ↗
C-sharp covers every topic to learn about C-Sharp thoroughly.
Learn C Programming ↗
C-Programming covers every topic to learn about C-Sharp thoroughly.
Learn C++ Programming↗
C++ covers every topic to learn about C-Sharp thoroughly.