Trigonometry Test Results

I got the results back from my trigonometry test today. Of the 50 people who took the test, 10 of us passed, and have been asked to take the practical test next month. And then one of us will get the job...

The test was actually very hard. With time running out, I stumbled on this question:

A disk 12cm in diameter has a 5cm hole punched in the center.
What is the longest line you can draw on the disk?

Categories:Science Work