Lab-Circle

void setup(){
float c;//Circrumference
float d;//Diameter of the circle
float r;//radiuns
float a;//area
  size(620,120);
  println("Circumference of a Circle");
  println("Method C=Pi*d ");
  d=10;
  c=PI*d;
  r=d/2;
  println("r is "+r);//print Diameter
  println("d is "+d);//print Diameter
  println("Pi is "+PI);// Pi=3.1415927
  println("C is "+c);

  a=PI*(r*r);
  println("A is "+a);
  fill(#690181);
  textSize(40);
  text("circumference is "+c,20,50);
  text("Area is "+a,20,100);
}