Sally is counting the people and animals that live on her farm. She, her brother, and her parents together have 18 cows, 1 horse, 10 goats, and no chickens. Sally picks one at random. Help her determine the likelihood of selecting each type of animal.

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.