Circle

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Points: 1 (partial)
Time limit: 1.0s
Memory limit: 98M
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Enter the real number as the radius R of a circle. calcule circumference and the area of that circle with the precision of 2 digits after the decimal point, in case R <0, print " NO CIRCLE ”.

Input:

A line of a real number R

Output:

Either 1 result "NO CIRCLE" or two lines corresponding to the circumference, the area of the circle is rounded to 2 digits after the decimal point.

Example 1:

Input:

-3.5

Output:

NO CIRCLE

Example 2:

Input:

3.0

Output:

18.85

28.27

utc

Comments


  • 0
    TuanKiet_HUSC  commented on Nov. 13, 2023, 12:05 p.m.

    test yếu quá


  • 0
    Kien  commented on Sept. 6, 2021, 9:56 a.m.

    include<stdio.h>

    include<iostream>

    using namespace std;

    int main(){

    int r;
    cout<<"nhap R: ";
    cin>> r;

if(r<0){
    cout<<"NO CIRCLE";
}
    else{

        float s;
        float p;

        p= 3.14*2*r;
        s= 3.14 * r*r;

        cout<<"p= "<< p <<" " <<"s= "<<s;

    }
return 0;

    }


  • 0
    Tranthanh  commented on Jan. 13, 2019, 2:14 p.m.

    include<iostream>

    using namespace std;

    int main()

    {

    float n,cv,dt;
cin>>n;

if(n >= 0)
{
    cv = 2 * 3.14 * n;
    dt = 3.14 * n * n;
    cout<<cv<<endl<<dt<<endl;
}
else
{
    cout<<"NO CIRCLE";
}
return 0;

    }