import java.io.*;

class trapez
{

public static void main(String args[])
{
	int b;
	int B,h;
	double A,P,z;
	b=citeste.intreg("\nIntroduceti baza mica b=");
	B=citeste.intreg("\nIntroduceti baza mare B=");
	h=citeste.intreg("\nIntroduceti inaltimea h=");
	if(b<0 || B<0 || h<0)
		{
			System.out.println("Valori gresite!!!");
		}
	else
		{
			z=Math.sqrt(((B-b)/2)*((B-b)/2)+h*h);
			P=b+B+2*z;
			A=b*h+2*(h*((B-b)/2)/2);	
			System.out.println(" P=" + P);
			System.out.println(" A=" + A);
		}

}
}
class citeste 
{
 public static int intreg(String text)
   {
	byte b;
	byte []a= new byte[81];   
	int i=0,z;
	System.out.print(text);
	try
	{
	while((b=(byte)System.in.read())!='\n')
	{
		a[i++]=b;
	}
	}catch(IOException e) {e.printStackTrace();}
	z=Integer.parseInt(new String(a,0,(i-1)));
	return z;
   }

}