On a map, 1/2 inch represents 4/5 mile.
what distance on the map represents 1 mile?
a.2/5 in

b.5/8 in

c. 1 3/5 in

d. 2 1/2 in

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.