**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.

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