In order to determine volume you should multiple w*d*h. So in this case 5*6*3 or 90 cubic meters.
AB=AC
AD=AD –-----> ABD≈CAD
BD=DC
BA=AC
A1=A2 -------->BAE≈CAE
AE=AE
BD=DC
D1=D2 -------->BDE≈CDE
DE=DE
so if BDE≈CDE AE and BC are perpendicular.
hope this helps
Sorry I cant answer it as i dont understand the question im so sorry :(
Answer:
oouu I'm in 7th grade science and I already did this I can help!
