Mathematician was placed in a glass cube, given 2 steel ball bearings each with a 2 cm diameter. He was given 1 hour to find as much as he could about his enclosure. He used the bearings to measure the floor of the cube and established it had an area of 2m square.
Physicist also measured the height and established it had a volume of 8 cubic metres
Police officer when asked 1 hour later apologised and stated those balls you gave me I've broken 1 and lost the other!