2,300 meters is the answer to your question.
Y=76 x-18
should be the anwer.
B) Rotterdam. Because sea level is 0 and Rotterdam is the only one below sea level
A of trapezium = ((a+b)/2)(h)
A = ((10+10+4)/2)(8)
A = (24/2)(8)
A = 12(8)
A = 94
The area is 94ft²