The mathematician takes the ball, measures its diameter, then calculates the volume.
The physicist submerges the ball in water and measures the amount of water displaced.
The engineer twists and turns the ball, looking for the model number.
The mathematician takes the ball, measures its diameter, then calculates the volume.
The physicist submerges the ball in water and measures the amount of water displaced.
The engineer twists and turns the ball, looking for the model number.