Question 28 nalated Rates Problem [15 pts] Consider a closed rectangular box of dimensions x m by ym by z m. Assume that x is increasing at the rate of 4 m/hr., y is decreasing at the rate of 6 m/hr., and z is increasing at the rate of 3 m/hr.. When x = 5 m,y = 4 m, and z = 6 m, at what rate is the box's (a) surface area changing? (b) volume changing? (c) main diagonal changing