Write a Program in c++ to find the radius of a circle ,calculate the area and perimeter and display them.

C++ Program to Find Radius,Area and Perimeter of Circle

#include<iostream.h>

#include<stdlib.h>

int main()

{

double radius,area,perimeter;

cout<<"Enter the radius of circle:";

cin>>radius;

perimeter=2*3.14*radius;

area=3.14*radius*radius;

cout<<"The area of circle is:";

cout<<area;

cout<<"\nThe perimeter is:";

cout<<perimeter;

return 0;

}

OUTPUT:

Enter the radius of circle:7.5

The area of circle is:176.71

The perimeter is:47.12