p5js-tutorial/sketch.js

let dia = 40;
let y =80;

function setup() {
  createCanvas(400, 200);
  background(220);
  noLoop();
}

function draw() {
  fill(128, 128, 0);
  noStroke();

  circle(100, y , dia);

  y = y * 1.5; 

  circle(200, y , dia);
  circle(300, y , dia);
}