Which statements must be true regarding the diagram?

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

The standard distance between studs in a house is 1.5 feet. if you have a set of blueprints for a house that mark every 1.5 feet with 2 in., by how many inches will a 13-foot wall be represented?

Acone with volume 1350 m³ is dilated by a scale factor of 1/3. what is the volume of the resulting cone? enter your answer in the box. m³