To train for a trialthon mr. Grey bikes swims and runs each day he bikes 10 times the distance he swims and runs 1.5 more miles than half of mr grey's biking. If mr grey did all of that for 25.5 miles than how many miles did he run bike and swim?

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.