Answer to Question #283160 in C++ for Komal

Question

Take input for the radius of a circle then calculate its area, circumference and diameter,

hen output the three results.

(Area= nr²

circumference=2ftr

diameter=2r)

Answer 1

#include <iostream>
using namespace std;
int main(){
    float radius;
    const int pi = 3.14159;


    cout<<"Input radius: ";
    cin>>radius;


    cout<<"Area: "<<pi * radius * radius;
    cout<<"\nCircumference: "<<2 * pi * radius;
    cout<<"\nDiameter: "<<2 * radius;


    return 0;
}