In defense of the Clumsy Nun, this is not her fault, but deceptive marketing created by the corporation she works for, in order to obtain more clients based on lies.
Hey, man, good for you for trying things out. You'll get great in no time I'm sure, but this hasn't really reach Danbooru's standards yet. Also for better or worse, Danbooru is more of a platform for others to share an artist's work, rather than artists sharing their own, so even then Id suggest against posting own work Keep at it and someday someone might share your things here
So how's Sensei's curse going to (attempt to) fulfill itself this time? (We already know that it's also tanking his Charisma, what with him being so honest and impossibly dense....)
Vertical side divided by 5: 1 / 5 = 0.2 That amount multiplied by 3 to get the diameter: 0.2 x 3 = 0.6 That amount divided by 2 to get the radius: 0.6 / 2 = 0.3