So the units here are meters per hour. And so b prime of t, that is going to be in meters per hour. A at time t sub zero. Remember, a is the area of our triangle, and we're measuring everything in meters, as you can tell from the information they've given us. And so area is going to be in square units, and so it's going to be in square meters. Now the height at time t sub zero. Well, both the base and the height, those are lengths, they're gonna be measured in meters.