HEL PLEASE AND THANK YOUU!! Which inequality is true?
O A. 1+4<7
B. 8-TI > 5
O C. 1011 > 30
OD. 2 > 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.