Pre calculus I need help please

Fencing encloses a rectangular backyard that measures 300 feet by 600 feet. A blueprint of the backyard is drawn on the coordinate plane so that the rectangle has vertices (0, 0) , (0, 60) , (30, 60), and (30, 0). A circular flower garden is dug to be exactly in the center of the backyard, with a radius of 60 feet. This garden is represented on the blueprint. What is the equation of the flower garden represented on the blueprint? Enter your answer by filling in the boxes co 10 11 12 Next