package quiz;

public class Geometry {

	public static double circleArea(double r) {

		return Math.PI * Math.pow(r, 2);

	}

	public static double recArea(double length, double width) {

		return length * width;

	}

	public static double triandleArea(double base, double height) {

		return base * height * 0.5;

	}

}