How to Build a Surface Area Calculator

const PI = Math.PI;

  function sphereSA(radius) {
  return 4 * PI * radius ** 2;
  }

  function cylinderSA(radius, height) {
  const lateral = 2 * PI * radius * height;
  const caps = 2 * PI * radius ** 2;
  return lateral + caps;
  }

  function coneSA(radius, height) {
  const slant = Math.sqrt(radius ** 2 + height ** 2);
  const lateral = PI * radius * slant;
  const base = PI * radius ** 2;
  return lateral + base;
  }

  function rectangularPrismSA(length, width, height) {
  return 2 * (length * width + length * height + width * height);
  }

  function torusSA(majorRadius, minorRadius) {
  return 4 * PI ** 2 * majorRadius * minorRadius;
  }