Cancels out with that 12. We get 1 is equal to pi times dh dt. To solve for dh dt, divide both sides by pi. And we get our drum roll now. The rate at which our height is changing with respect to time, as we're putting 1 cubic centimeter of water per second in, and right when our height is 2 centimeters high, the rate at which this height is changing with respect to time is 1 over pi. And I haven't done the dimensional analysis, but this is going to be in centimeters per second. You could work through the dimensional analysis if you like by putting the dimensions right over here.