A rectangular room 4m by 3m and 2m high. A Snail is at A and wants to get to R. Find the shortest path it could crawl without crossing the ceiling. Find the length of this path and draw it on a 3D sketch of the room.
Your group has decide, with great wisdom, that it's strategy is to imagine the room is a box with the edges cut so that it lays flat. On sketches of the fattened room, plot possible pathways and calculate the distances covered by the Snail along these pathways.