Sorry I'm late on this, but your answer is, "Ming."
20 meters walk south is the <u>short leg</u>. The long leg is 30 meters walk east. Distance from 30 meters east to starting point is a hypotenuse.
This movement is called convection. It can be found in liquids, gasses and rheids - solids that can also experience movement ( on a big time scale), such as the earth mantle. One of the types of convection is diffusion: net movement of gasses from higher to lower concentration areas.
The Statue were made from Volcanic Ash from the Rano Raraku Volcano
But nobody knows who made them...
Hope this helps!!
