The radius of Circle Upper A is 3 mm. The radius of Circle Upper B is 2 mm greater than the radius of Circle Upper A. The radius of Circle Upper C is 5 mm greater than the radius of Circle Upper B. The radius of Circle Upper D is 3 mm less than the radius of Circle Upper C. What is the area of each​ circle? How many times greater than the area of Circle Upper A is the area of Circle Upper D​?