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42 lines
850 B
42 lines
850 B
abstract class Area{
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public abstract double draw();
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}
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class circle extends Area{
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double r;
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public double draw() {
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double area = 3.14 * r * r;
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System.out.println(area);
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return area;
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}
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}
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class rectangle extends Area{
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double l,b;
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public double draw() {
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double area = l * b;
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System.out.println(area);
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return area;
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}
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}
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class tangle extends Area{
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double b,h;
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public double draw() {
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double area = 0.5 * b * h;
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System.out.println(area);
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return area;
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}
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}
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public class Main{
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static void main(String[] args) {
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circle c=new circle();
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c.r=5;
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c.draw();
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rectangle a=new rectangle();
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a.l=5;
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a.b=4;
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a.draw();
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tangle t=new tangle();
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t.b=5;
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t.h=4;
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t.draw();
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}
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}
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