Xavier wants to buy fertilizer for his yard. the yard measures 35 feet by 55 feet. the directions on the bag of fertilizer say that one bag will cover 1,250sq ft. how many bags of fertilizer should xavier buy?

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.