Someone please help, I have a test TOMMOROW A tube is being stretched while maintaining its cylindrical shape. The height is increasing at the rate of 2 millimeters per second. At the instant that the radius of the tube is 6 millimeters, the volume is increasing at the rate of 96PI cubic millimeters per second. Which of the following statements about the surface area of the tube is true at this instant? (The volume V of a cylinder with radius r and height is V =Pi(r^2)h . The surface area S of a cylinder, not including the top and bottom of the cylinder, is S =2Pirh .)