Kiara is making a smoothie, for every cup of strawberries she wants to use 1/3 of a cup of blueberries. if she uses 3 cups of strawberries, how many cups of blueberries should she use?

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.