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 52 cm? . . . Write the equation that relates the rate of change in area to the rate of change in radius. dA ar dt dt (Type an expression using r as the variable.) The rate of change of the area is (Type an exact answer in terms of It.) cm2 / min cm / min cm