Find the volume of the pyramid 10ft 8yd 9yd

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

Ineed with math stuff it involves graphs

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