A plane flying at an altitude of 4.0 mi is at a direct distance D = 1 16.0 + x" from an airport control tower, where x is the horizontal distance to the tower. If the plane's speed is 360 mi/h, how fast is D changing when x = 8.4 mi? . . . D is changing at a rate of mi/h. (Do not round until the final answer. Then round to the nearest ten as needed.)When a circular plate of metal is heated in an oven, its radius increases at a rate of 0.01 cm / min. At what rate is the plate's area increasing when the radius is 53 cm? . . . The rate of change of the area is cm 2 / min . (Type an exact answer in terms of It.)A metal cube dissolves in acid such that an edge of the cube decreases by 0.40 mm/min. How fast is the volume of the cube changing when the edge is 8.70 mm? E> The volume is changing at a rate of D mmalmin. (Round to the nearest integer as needed.)