A square pyramid and a triangular pyramid each have a base that measures 36 square inches. The volume of the square pyramid is twice as large as that of the triangular pyramid. What can be said about the heights of the pyramids?

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap