Question: Suppose that the edge lengths x, y, and z of a closed rectangular box are

changing at the following rates:

dx/dt = 2 m/sec dy/dt = - 1.5 m/sec dz/dt = 1 m/sec

Find the rate at which the box’s voluMeand surface area are changing at the instant

when x=5, y = 3, and z=2.