Help me with this ASAP please

Answer:
5 is b and 6 is b
Step-by-step explanation:
5. The area of the trapezoid face is 80 and then multiply by 9 to get volume.
6. The area of the trapezoid face is 16.5 and then multiply by 13 to get volume.
Make sure you pick b for 6 and NOT d. The units are not correct for volume in d.