Afigure has 4 sides. one pair of opposite sides are each 2 inches long. the other pair of opposite sides are each 5 inches long. what is the perimeter of the figure?

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.