The science club has 35 members, 10 girls and 25 boys. what is the ratio of girls to boys in the science club? a. 2: 1 b. 2: 5 c. 5: 2

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.