At a certain point in time, a cubical crystal has edges 5 mm in length, and these edges are growing at a rate of 2 mm per hour. How fast is the volume increasing?

Answer 1

V = x^3
dV/dx = 3 x^2
dV/dt = DV/dx*dx/dt
enough?

Answer 2

yeah thanks :)

Answer 3

Good. You are welcome.