ObjectOrientedusingJava/Circle1.java at main · anilantony/ObjectOrientedusingJava · GitHub

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class Circle
{
    public double radius;
    public double area()
    {
        return Math.PI*radius*radius;
    }
    public double perimeter()
    {
        return 2*Math.PI*radius;
    }
    public double circumference()
    {
        return perimeter();
    }
}
class Cylinder extends Circle
{
    public double height;
    public double volume()
    {
        return area()*height;
    }
}
public class Circle1
{
    public static void main(String args[])
    {
        Cylinder c=new Cylinder();
        c.radius=7;
        c.height=10;
        System.out.println(c.area());
        System.out.println(c.volume());
    }
}