import java.io.*;
class segi3_segi4{
private double a,b;
//Pengkapsulan
private double LuasSegi4(double a,double b){
return a*b;
}
//Pemgkapsulan
private double LuasSegi3(double a,double b){
return (a*b)/2;
}
public void setA(double a){
this.a=a;
}
public void setB(double b){
this.b=b;
}
public double getA(){
return a;
}
public double getB(){
return b;
}
//Method Pemanggil
public double getLuasSegi4(){
return LuasSegi4(a,b);
}
//Method Pemanggil
public double getLuasSegi3(){
return LuasSegi3(a,b);
}
}
class main{
public static void main (String[] args) throws Exception
{
DataInputStream dis=new DataInputStream(System.in);
segi3_segi4 s=new segi3_segi4();
System.out.print("Masukkan Panjang :");
int p=Integer.parseInt(dis.readLine());
System.out.print("Masukkan Lebar :");
int l=Integer.parseInt(dis.readLine());
s.setA(p);
s.setB(l);
System.out.print("Bentuk Segi Empat dengan Luas "+s.getLuasSegi4());
System.out.print("\nBentuk Segi Tiga dengan Luas "+s.getLuasSegi3());
}
}
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