aiden was given this problem:
The radius r(t) of the base of a cylinder is increasing at a rate of 1 meter per hour and the height h(t) of the cylinder is decreasing at a rate of 4 meters per hour. At a certain instant the base radius is 5 meters and the height is 8 meters. What is the rate of change of the volume V(t) of the cylinder at that instant?
Which equation should Aiden use to solve the problem?