The radius of a circular oil slick expands at a rate of 5 m/min. (a) How fast is the area of the oil slick increasing when the radius is 52 m? (Use symbolic notation and fractions where needed.) dA 11440 m²/min 7 dt Incorrect (b) If the radius is 0 at time t = 0, how fast is the area increasing after 3 min? (Use symbolic notation and fractions where needed.) dA 3300 m2/min dt 7. Incorrect II

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