ProofWiki:Jokes/Physicist Mathematician and Engineer Jokes/The Red Rubber Ball/Variant 2

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The Red Rubber Ball

A physicist, mathematician and engineer were asked to determine the volume of a red rubber ball.

The mathematician set up and solved an appropriate triple integral, then measured the diameter of the ball and plugged in the number.

The physicist filled a beaker with water, immersed the ball, caught the runoff and measured its volume.

The engineer looked over at the physicist's messy desk and by now heavily waterlogged notebook, and said:

"You do of course realise that you made the unwarranted assumption that the ball is incompressible, don't you?"