Answer:
Draw a figure!
There are 6 surfaces to add.
4 of them have area 9*5 and 2 have area 5*4.
You should be able now to compute the surface areas.
Step-by-step explanation:
Answer: 140 m3
Step-by-step explanation:
Multiply the area of the trapezoid face by the length .
Since the area is 20, you multiply it by 7 to get 140
Answer: DB = 9 I think.
Step-by-step explanation:
Answer:
56*
Step-by-step explanation:
All you have to do is add EFH to HFG
Divide:

Which would equal 15.72 (as shortened)