Answer:
57.2 units^2
Step-by-step explanation:
The coordinates provided form a parallelogram, not a rectangle. See the attached image for a diagram of EFGH. The area of a parallelogram is given by:
Area = (Base) x (Height)
The attachment explains an approach of using right triangles to find the base and height of the parallelogram.
I'm not confident this was the best approach, so I hope someone would comment if a simpler solution is available.
3/4=0.75
0.75×500=375
375 of the 500 seats are filled
Answer:

Step-by-step explanation:
r = Radius of semicircle = 
Area of semicircle is given by

The area of the semicircle is
.
Answer:
I don't really understand the question
Step-by-step explanation:
c
Answer:
300,000,000
Step-by-step explanation:
change everything after the 3 to a zero, hope this is the answer you are looking for