Answer:
Step-by-step explanation:
1,2,3 and 6 :)
So you are lowering 12 feet down, then 11 feet down , then 8 feet down.
so the total amount lowered is 12 + 11 + 8 , which is a total elevation change of 31 feet
Angles of a pentagon = 108°
angles of a square = 90°
108+90
answer= b