The radius of Circle Upper A is 5 ft. The radius of Circle Upper B is 5 ft greater than the radius of Circle Upper A. The radius of Circle Upper C is 5 ft greater than the radius of Circle Upper B. The radius of Circle Upper D is 1 ft 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​?

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