Question

X CODE C + +

Ask the user to enter the integer radius of a circle, and print out Tr2. Make sure the answer is correct to the area of the circle A one place after the decimal point. Remember you only have integer variable to play with. (Can you get the answer correct to 2 digits after the decimal point?) (m) : 1 3.1 m 2 Enter Circle Radius Area of circle :

Answer 1

#include <iostream>
#include <iomanip>
using namespace std; 
int main() { 
   int r;
   double a;
   
   cout<<"Enter Circle Radius(m)\t: ";
   cin>>r;
   
   a = 3.14159*r*r;
   
   cout<<setprecision(2);
   cout<<"Area of circle\t\t: "<<a<<" m^2"<<endl;
   
   return 0; 
}

$\color{blue}\underline{Output:}$

Enter Circle Radius (m) Area of circle : 1 : 3.1 m^2