Each group of three digits separated by commas in a multi digit number

Could somebody me with this radical simplification?

The graph of y=x3 is transformed as shown in the graph below. which equation represents the transformed function?

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.