Before my mentor became a mathematics teacher he taught welding.
They needed the Pythagorean theorem, and he gave a quiz which included these two questions:
1. Suppose a hiker starts at a camp and walks three miles north, then four miles east. If he takes the shortest route, how far does he have to walk to get back to camp?
2. You are welding together a corner which needs a brace. You want the sides to be 3 feet and 4 feet. How long should the brace be?
These were (including the pictures) on the same page right next to each other on the quiz.
Nearly all the students missed question #1 and got question #2 correct. When asked why that happened, one student explained the second question was welding, not math.