A piston is seated at the top of a cylindrical chamber with radius 7 cm when it starts moving into the chamber at a constant speed of 2 cm/s (see figure). What is the rate of change of the volume of the cylinder when the piston is 7 cm - Piston 6 cm from the base of the chamber? Let V, r, and h be the volume, radius, and height of a cylinder, respectively. Write an equation relating V, r, and h. V = arch (Type an exact answer, using it as needed.) Differentiate both sides of the equation with respect to t. dv (Type an exact answer, using