Answer:
I'm not sure but try 13.5.
Step-by-step explanation:
It might not be correct sorry
Answer:
B. 1
Step-by-step explanation:
they only cross at one point... look below
Answer:

Step-by-step explanation:
Surface area → area of 2 bases + area of 6 rectangles
Area of base is given
Area of rectangle → length × width

Just a shot in the dark: 9*30 and 9*8?