1. The problem statement, all variables and given/known data This is the problem I am having... All edges of a cube are expanding at a rate of 3 centimeters per second. How fast is the volume changing when each edge is (a) 1 centimeter (b) 30 centimeters 2. Relevant equations The equation I am using is V = S³ 3. The attempt at a solution This is what I did dv/dt = 3s² ds/dt dv/dt = 3 (1)² x 3 dv/dt = 3 x 3 dv/dt = 9 dv/dt = 3s² ds/dt dv/dt = 3 (30)² x 3 dv/dt = 3 (900) x 3 dv/dt = 2700 x 3 dv/dt = 8100 I am just wondering wheter or not I did this equation right so I can look back over it and find the mistake.