What is the function of the middle ear? to transform sound waves into nerve impulses to transform mechanical vibrations into nerve impulses to protect the eardrum to transform sound waves into mechanical vibrations

Lliana wants to find the perimeter of triangle abc. she uses the distance forumla to determine the length of ab. finish lliana's calculations to find the length of ab. what is the perimeter of triangle abc? round the answer to the nearest tenth, of necessary.