Question

Write the C+ program to input the
radius of a circle and calculate the area​

Answer 1

Answer:

#include<iostream.h>

#include<conio.h>

void main()

{

float r, pi, area;

pi=3.14;

cout<<"Enter value of radius";

cin>>r;

area=pi*r*r;

cout<<"Area of the circle= "<<area;

getch();

}

Explanation: