It’s 3/14. You know what that means!
I always have my slight annoyances for custom-named radicals, but pi makes an absolute lot of sense. Its radical’s meanings, “high & level”, “lofty”, “bald”, “dangerous”, are not really in the curriculum to begin with, so this is a simple, straightforward, and memorable radical name. So bravo. A 乾杯 to 兀, our pi-looking friend.