The length { of a rectangle is decreasing at a rate of 6 The rate of change of the area of the rectangle is cm/sec while the width w is increasing at a rate of 6 cm / sec. cm/sec. When {=3 cm and w =4 cm, find the rates of (Simplify your answer.) change of the area, the perimeter, and the lengths of the diagonals of the rectangle. Determine which of these quantities are increasing, decreasing, or constant