circle.java

来自「this sourse code for the hw problems in 」· Java 代码 · 共 19 行

/*
	Name: Anas Hazeen
	ID  : 991748
*/
class Circle{
	protected double rd;
	Circle (double r){
		this.rd=r;
	}
	public double getRadius(){
		return rd;
	}
	public void setRadius(double r){
		this.rd=r;
	}
	public double findArea(){
		return (Math.PI*rd*rd);
	}
}