During an experiment, India examines prepared slides that her teacher has given her. One of the slides shows a single-celled organism that lives in soil. It has a nucleus and many different internal structures. To which domain does the organism likely belong?

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.