Box = circle + triangle, triangle = 2 circle, if triangle = 4, then box = () How do you do it?

Box = circle + triangle, triangle = 2 circle, if triangle = 4, then box = () How do you do it?

Triangle = 2 circle, triangle = 4 circle = 2
So box = circle + triangle = circle + 2 circle = 3 circle = 3 * 2 = 6