Yeah it's not hard, but if the instructor just wants to test if you can follow directions and plug extremely simple numbers into an equation without a calculator then this is fine. I'd almost expect this on a test for some trade skill, like some 1-2 year certification you know?
Pi is a geometric constant, so obviously we're redefining the decimal numbering system to make "1" anchored to a fixed value of π/5 (or simply 1 in our superior new decimal representation).
Don't believe the haters who'll complain about "needing integer number representations". Literally anyone with a basic grasp of fractions will be perfectly fine! Let's illustrate with a few simple examples:
"I'll take three-fifths pi gallons of blue slushie, please"
"No thanks, I don't need any cups because I actually brought two-fifths pi containers of my own each with three-tenths pi gallons of individual capacity specifically for this purpose".
As you can see, there is no reason to be concerned whatsoever. The system works. It is mathematically elegant.
Okay, I love the fact that we are so low on traffic currently that it makes perfect sense to reply to weeks old messages, and I am going to work on my inhibitions along those lines.