The system has no real solutions. What does this indicate about the worker's arms and the measuring tape? They will never be at the same height at the same time. They will be at the same height exactly once. They will be at the same height at two different times.

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.