12578

#include <iostream>
#include <string.h>
#include <stdio.h>
#include <math.h>

#define lld long long

using namespace std;

int main()
{
	int t;
	double PI;
	double l,r,A,C,w;
	cin>>t;
	PI= acos(- 1);

	while(t--)
	{
		cin>>l;
		r=l/5;

		w= (6*l)/10;

		A = w*l;
		C= PI*r*r;
		A -=C;

		printf("%.2lf %.2lf\n",C,A);
	}

	return 0;
}

 

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