My pleasure.
Remember that you, as a superior race of people who can actually stop and admire the scenery at will, have to learn the theory to fly both a plank and an egg whisk. That shows the CAA can see the superior capacity inherent in one who flies rotary; in other words, think of it as a compliment
On the square roots, if manually calculating, splitting the number into prime factors can help find the answer, as a mathematical aside that need not concern you if you have a good calculator. On that score, find one with a degree, minute and second button (marked [° ' "]) for general navigation and [EXP] and [ENG] buttons to help in radio navigation. Your instructor should be able to show you how these help; if not, ask me.