Solution
Our point P makes a lengthy journey, with many stops, before returning home. Some moves, which we call "a", as from P to A, are 120° around a circle of radius 2. The length of an "a" move is (120/360) · (2
· 2) = 4/3.
Shorter moves, which we call "c", as from B to C, are 30°; their length is (30/360) · (2 · 2) = /3.
When P lands in corners or on edges, it pauses briefly.
We have 8 "a" moves and 8 "c" moves. The total trip is 8(4/3) + 8(/3) = 40/3. The answer is (d).